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Dayang Chem (Hangzhou) Co.,Ltd.

Dayangchem's R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. DayangChem can provide different quantities

(E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

inquiry

Simagchem Corporation

Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

High quality (E,E,E)-2,7-dimethylocta-2,4,6-trienedial supplier in China

Cas:5056-17-7

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

inquiry

Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Chemwill Asia Co., Ltd.

Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

(E,E,E)-2,7-Dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva

(E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:1 Kilogram

FOB Price: $9.0 / 99.0

Type:Trading Company

inquiry

Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

2,4,6-Octatrienedial,2,7-dimethyl-, (2E,4E,6E)- 5056-17-7

Cas:5056-17-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Changchun Artel lmport and Export trade company

Minimum Order Qty. 10 Gram Supply Ability 500 Kilograms/Month Storage store in cool, dry, ventilated place 20℃ Delivery Time 3 business days after payment Payment Term TT,western union,Paypal,MoneyGram Package 10g,20g,50g,100g,500g,1KGS,5KGS,10KGS,25

(E,E,E)-2,7-dimethylocta-2,4,6-trienedial CAS NO.5056-17-7

Cas:5056-17-7

Min.Order:10 Gram

Negotiable

Type:Trading Company

inquiry

Qingdao Beluga Import and Export Co., LTD

(E,E,E)-2,7-dimethylocta-2,4,6-trienedial CAS:5056-17-7 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high

(E,E,E)-2,7-dimethylocta-2,4,6-trienedial CAS:5056-17-7

Cas:5056-17-7

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Shandong Hanjiang Chemical Co., Ltd.

Hello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai

2,4,6-Octatrienedial,2,7-dimethyl-, (2E,4E,6E)-

Cas:5056-17-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Henan Wentao Chemical Product Co., Ltd.

Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

2,4,6-Octatrienedial,2,7-dimethyl-, (2E,4E,6E)-

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

SHANGHAI T&W PHARMACEUTICAL CO., LTD.

A substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc

(E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:4 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Zibo Hangyu Biotechnology Development Co., Ltd

Zibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi

High quality (E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

inquiry

Suzhou Health Chemicals Co., Ltd.

High quality,stable supply chain.Appearance:white/off-white or light yellow Storage:Store in cool and dry place, keep away from strong light and heat. Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Application:This product can be use

(E,E,E)-2,7-Dimethyl-2,4,6-octatrien-1,8-dial

Cas:5056-17-7

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Win-Win chemical Co.Ltd

Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai

Cas no.5056-17-7 98% (E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Dingyan Chem Co., Ltd

R & D enterprises have their own stock in stock Package:1kg Application:pharmaceutical intermediates

2,4,6-Octatrienedial,2,7-dimethyl-, (2E,4E,6E)-

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Hangzhou J&H Chemical Co., Ltd.

J&H CHEM is one of China's leading providers of integrated fine chemical services including offering, research and development, Custom manufacturing business, as well as other Value-added customer services, for diversified range products of chemicals

(E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Xian Changyue Biological Technology Co., Ltd.

best seller Application:API

(E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Henan Tianfu Chemical Co., Ltd.

Good quantity Storage:R.T. Package:as per buyers Application:intermediate Transportation:by air/sea

(E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Antimex Chemical Limied

Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali

2,4,6-Octatrienedial,2,7-dimethyl-, (2E,4E,6E)-

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Wuhan Circle Star Chem-medical Technology co.,Ltd.

good quality, competitive price, thoughtful after sale serviceAppearance:white powder Storage:Keep it in dry,shady and cool place Package:25kg,50kg,180kg,200kg,250kg,1000kg,customization Application:Pharma;Industry;Agricultural;chemical reaserch Tran

(E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

DB BIOTECH CO., LTD

best seller Application:API

(E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Hangzhou Fandachem Co.,Ltd

2,7-DIMETHYL-2,4,6-OCTATRIENDIALAppearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express

2,7-DIMETHYL-2,4,6-OCTATRIENDIAL

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Other

inquiry

Henan Kanbei Chemical Co.,LTD

factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

(E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Muhuang Technology Co., Ltd

best seller Application:API

(E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

ZHEJIANG JIUZHOU CHEM CO.,LTD

factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

(E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

LEAP CHEM Co., Ltd.

Best Seller, High Quality, Competitive Price, Fast Delivery, Quick ResponseAppearance:powder, or liquid Storage:Stored in room temperature, ventilated place Package:Bottle, barrel, cargo, container, etc. Application:Pharmaceuticals, intermediates, AP

12,12-Di-apo-carotenedial

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Qingdao Sigma Chemical Co., Ltd.

Qingdao Sigma Chemical Ltd is is a global chemical industry manufacturers and suppliers of pharmaceuticals and intermediates, peptide,Nootropis etc API, food and feed additives, herbal extracts, agrochemicals and fine chemicals etc. Our Labo

High Quality (E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:1 Gram

FOB Price: $1.0

Type:Trading Company

inquiry

Xiamen BaiFuchem Co.,Ltd

BaiFuChem is a Professional chemical raw material supplier in China, our main products include Biochemical , Pharma Intermediate and Organic chemical etc. BaiFuChem have wealth of products,experience , expertise and state-of-the-art

High quality (E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

Hangzhou Neway Chemicals Co., Ltd.

We supply1.in very competitive price; 2.Quality Guaranteed; 3.Fast Delivery; 4.credit support Application:APIs and Chemical Intermediates

(E,E,E)-2,7-dimethylocta-2,4,6-trienedial

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Shanghai united Scientific Co.,Ltd.

United Scientific Company Located in Shanghai of China , is a competitive player in the global specialty and fine chemical market. Fenghua has both the expertise and flexibility to produce a wide range of chemicals. Focusing on developing the innovat

2,4,6-Octatrienedial,2,7-dimethyl-, (2E,4E,6E)-

Cas:5056-17-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

2,2'-(1,6-Dimethyl-1,3,5-hexatrienylen)bis(5,5-dimethyl-1,3-dioxan)
209615-09-8

2,2'-(1,6-Dimethyl-1,3,5-hexatrienylen)bis(5,5-dimethyl-1,3-dioxan)

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
With hydrogenchloride In tetrahydrofuran at 20℃; for 2h; Hydrolysis;94%
8,8-Dimethoxy-2,7-dimethylocta-2,4,6-trien-1-al

8,8-Dimethoxy-2,7-dimethylocta-2,4,6-trien-1-al

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
With hydrogenchloride In acetone for 0.166667h; Ambient temperature;92%
(2E,4E,6E)-1,1,8,8-tetramethoxy-2,7-dimethylocta-2,4,6-triene
128759-95-5

(2E,4E,6E)-1,1,8,8-tetramethoxy-2,7-dimethylocta-2,4,6-triene

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
With acetic acid In tetrahydrofuran at 45℃; for 3h;90%
1,8-diethoxy-1,3,6,8-tetramethoxy-2,7-dimethyl-4-octene

1,8-diethoxy-1,3,6,8-tetramethoxy-2,7-dimethyl-4-octene

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
With sodium acetate; acetic acid In water at 95℃;85%
methyl prop-1-enyl ether
7319-16-6

methyl prop-1-enyl ether

1,1,4,4-tetramethoxy-2-butene
5370-08-1

1,1,4,4-tetramethoxy-2-butene

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
Stage #1: methyl prop-1-enyl ether; 1,1,4,4-tetramethoxy-2-butene With iron(III) chloride In toluene at 25℃; for 6h;
Stage #2: With sulfuric acid; water In toluene at 80℃; for 5 - 8h;
Stage #3: With water; sodium hydrogencarbonate In toluene at 80 - 85℃; for 3 - 4h; Product distribution / selectivity;
83.6%
(E)-3-iodo-2-methylprop-2-enal
106484-89-3

(E)-3-iodo-2-methylprop-2-enal

(2E,4E)-2-methyl-5-(tributylstannyl)-2,4-pentadien-1-al

(2E,4E)-2-methyl-5-(tributylstannyl)-2,4-pentadien-1-al

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
With triphenyl-arsane; tris-(dibenzylideneacetone)dipalladium(0) In 1-methyl-pyrrolidin-2-one at 25℃;80%
(2E,4E,6E)-2,6-dimethylocta-2,4,6-triene-1,8-diol
113951-62-5

(2E,4E,6E)-2,6-dimethylocta-2,4,6-triene-1,8-diol

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
With manganese(IV) oxide In acetone at 0 - 20℃;73%
With manganese(IV) oxide In acetone at 0℃;58%
With manganese(IV) oxide In acetone at 0℃;26%
hydrogen bis(oxalato)borate

hydrogen bis(oxalato)borate

methyl (Z)-prop-1-enyl ether
4188-68-5

methyl (Z)-prop-1-enyl ether

trans-butenedial bis-(dimethyl acetal)
6068-62-8

trans-butenedial bis-(dimethyl acetal)

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
With hydrogenchloride; sodium hydroxide In water67%
2,7-dimethyl-2,4,6-octatrienedial

2,7-dimethyl-2,4,6-octatrienedial

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
With p-toluene sulfinic acid In 1,4-dioxane for 0.25h; Heating / reflux;66%
With toluene-4-sulfonic acid In 1,4-dioxane for 0.25h; Product distribution / selectivity; Heating / reflux;66%
With toluene-4-sulfonic acid In 1,4-dioxane for 0.25h; Inert atmosphere; Reflux;16%
1,1,8,8-tetramethoxy-2,7-dimethyl-2,4,6-octatriene

1,1,8,8-tetramethoxy-2,7-dimethyl-2,4,6-octatriene

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
With acetic acid In tetrahydrofuran; water at 45 - 54℃; for 3h; Product distribution / selectivity;58.8%
Multi-step reaction with 2 steps
1: acetic acid / water; tetrahydrofuran / 45 °C / Inert atmosphere
2: toluene-4-sulfonic acid / 1,4-dioxane / 0.25 h / Inert atmosphere; Reflux
View Scheme
With acetic acid In tetrahydrofuran; water at 45 - 54℃; for 3.5h;10.75 g
2,2'-(1,6-Dimethyl-1,3,5-hexatrienylen)bis(5,5-dimethyl-1,3-dioxan)
209615-09-8

2,2'-(1,6-Dimethyl-1,3,5-hexatrienylen)bis(5,5-dimethyl-1,3-dioxan)

A

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

B

7-(5,5-Dimethyl-1,3-dioxan-2-yl)-2,7-dimethyl-2,4,6-octatrienal
80713-45-7

7-(5,5-Dimethyl-1,3-dioxan-2-yl)-2,7-dimethyl-2,4,6-octatrienal

Conditions
ConditionsYield
With hydrogenchloride In methanol; dichloromethane for 0.0333333h; Ambient temperature; Yields of byproduct given;A n/a
B 37%
Pyruvic aldehyde dimethyl acetal
6342-56-9

Pyruvic aldehyde dimethyl acetal

tetraethyl (E)-2-butene-1,4-diphosphonate
1112-96-5, 16626-80-5, 56727-14-1

tetraethyl (E)-2-butene-1,4-diphosphonate

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
Stage #1: Pyruvic aldehyde dimethyl acetal; tetraethyl (E)-2-butene-1,4-diphosphonate With sodium hydride In tetrahydrofuran at 0 - 60℃; for 3h; Inert atmosphere; Cooling with ice;
Stage #2: With sulfuric acid In tetrahydrofuran; water at 0 - 50℃; for 2.5h;
35%
2,7-dimethyl-octa-2,6-diene-1,8-diol
29146-49-4

2,7-dimethyl-octa-2,6-diene-1,8-diol

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
With manganese(IV) oxide; chloroform
2,7-dimethyl-octa-2t,4c,6t-trienedial
181963-79-1

2,7-dimethyl-octa-2t,4c,6t-trienedial

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
With benzene
With iodine; Petroleum ether; benzene
2,7-dimethyl-octa-2t,4c,6t-trienedial
181963-79-1

2,7-dimethyl-octa-2t,4c,6t-trienedial

benzene
71-43-2

benzene

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

1,1,3,6,8,8-hexaethoxy-2,7-dimethyl-oct-4t(?)-ene

1,1,3,6,8,8-hexaethoxy-2,7-dimethyl-oct-4t(?)-ene

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
With 1,4-dioxane; phosphoric acid; hydroquinone at 100℃;
With water; acetic acid; ethyl acetate at 100℃; in Gegenwart von Hydrochinon;
2,7-dimethyl-octa-2,6-diene-1,8-diol
29146-49-4

2,7-dimethyl-octa-2,6-diene-1,8-diol

chloroform
67-66-3

chloroform

manganese (IV)-oxide

manganese (IV)-oxide

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

2,7-dimethyl-octa-2t,4c,6t-trienedial
181963-79-1

2,7-dimethyl-octa-2t,4c,6t-trienedial

iodine
7553-56-2

iodine

benzene
71-43-2

benzene

petroleum ether

petroleum ether

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
mit Licht.Irradiation;
4-chloro-2-methyl-2-buten-1-al neopentyl acetal
62285-88-5

4-chloro-2-methyl-2-buten-1-al neopentyl acetal

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 95 percent / Na2S*9H2O / methanol / 10 h / 20 °C
2: 80 percent / urea-hydrogen peroxide; phthalic anhydride / acetonitrile / 1 h / 0 °C
3: 82 percent / KOH / 2-methyl-propan-2-ol; CCl4 / 5 h / 20 °C
4: 94 percent / HCl / tetrahydrofuran / 2 h / 20 °C
View Scheme
(E)-4-chloro-2-methylbut-2-enal
26394-25-2

(E)-4-chloro-2-methylbut-2-enal

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: 75 percent / p-TsOH / benzene / 3 h / Heating
2: 95 percent / Na2S*9H2O / methanol / 10 h / 20 °C
3: 80 percent / urea-hydrogen peroxide; phthalic anhydride / acetonitrile / 1 h / 0 °C
4: 82 percent / KOH / 2-methyl-propan-2-ol; CCl4 / 5 h / 20 °C
5: 94 percent / HCl / tetrahydrofuran / 2 h / 20 °C
View Scheme
isoprene epoxide
1838-94-4

isoprene epoxide

2-ThNNa*CuCN*C5H4NCH2Li

2-ThNNa*CuCN*C5H4NCH2Li

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: 30.1 g / CuCl2; LiCl / ethyl acetate / 0.5 h / 80 °C
2: 75 percent / p-TsOH / benzene / 3 h / Heating
3: 95 percent / Na2S*9H2O / methanol / 10 h / 20 °C
4: 80 percent / urea-hydrogen peroxide; phthalic anhydride / acetonitrile / 1 h / 0 °C
5: 82 percent / KOH / 2-methyl-propan-2-ol; CCl4 / 5 h / 20 °C
6: 94 percent / HCl / tetrahydrofuran / 2 h / 20 °C
View Scheme
bis(3-formyl-3-methyl-2-propenyl) sulfide dineopentyl diacetal
251291-86-8

bis(3-formyl-3-methyl-2-propenyl) sulfide dineopentyl diacetal

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 80 percent / urea-hydrogen peroxide; phthalic anhydride / acetonitrile / 1 h / 0 °C
2: 82 percent / KOH / 2-methyl-propan-2-ol; CCl4 / 5 h / 20 °C
3: 94 percent / HCl / tetrahydrofuran / 2 h / 20 °C
View Scheme
bis(3-formyl-3-methyl-2-propenyl) sulfone dineopentyl diacetal
251291-85-7

bis(3-formyl-3-methyl-2-propenyl) sulfone dineopentyl diacetal

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 82 percent / KOH / 2-methyl-propan-2-ol; CCl4 / 5 h / 20 °C
2: 94 percent / HCl / tetrahydrofuran / 2 h / 20 °C
View Scheme
isoprene
78-79-5

isoprene

tricarbonyl(η6-1,3,5-cyclooctatriene)chromium(O)

tricarbonyl(η6-1,3,5-cyclooctatriene)chromium(O)

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1.1: N-bromosuccinamide; water / 10 h
1.2: NaOH / H2O / 1 h / 20 °C
2.1: 30.1 g / CuCl2; LiCl / ethyl acetate / 0.5 h / 80 °C
3.1: 75 percent / p-TsOH / benzene / 3 h / Heating
4.1: 95 percent / Na2S*9H2O / methanol / 10 h / 20 °C
5.1: 80 percent / urea-hydrogen peroxide; phthalic anhydride / acetonitrile / 1 h / 0 °C
6.1: 82 percent / KOH / 2-methyl-propan-2-ol; CCl4 / 5 h / 20 °C
7.1: 94 percent / HCl / tetrahydrofuran / 2 h / 20 °C
View Scheme
methyl (E)-4-bromo-2-methylbut-2-enoate
99968-60-2, 27652-16-0

methyl (E)-4-bromo-2-methylbut-2-enoate

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: copper-zinc; tetrahydrofuran / Erwaermen des Produkts mit N-Brom-succinimid und wenig Dibenzoylperoxid in Tetrachlormethan unter Belichtung und Erhitzen des erhaltenen Produkts mit 2,4,6-Trimethyl-pyridin und wenig 2,4-Dimethyl-pyridin
2: lithium alanate; diethyl ether
3: acetone; manganese (IV)-oxide
View Scheme
(1E,5E)-1,6-dimethyl-1,6-diformyl-1,5-hexadiene-3-yne
53163-61-4

(1E,5E)-1,6-dimethyl-1,6-diformyl-1,5-hexadiene-3-yne

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: Lindlar-catalyst; methanol / Hydrogenation
2: iodine; benzene; petroleum ether
View Scheme
2,7-dimethyl-octa-2ξ,4c,6ξ-triene-1,8-diol
113951-62-5

2,7-dimethyl-octa-2ξ,4c,6ξ-triene-1,8-diol

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: acetone; manganese (IV)-oxide / unter Lichtausschluss
2: iodine; benzene; petroleum ether
View Scheme
dimethyl (2E,4E,6E)-2,7-dimethylocta-2,4,6-triene-1,8-dioate
84695-32-9

dimethyl (2E,4E,6E)-2,7-dimethylocta-2,4,6-triene-1,8-dioate

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: lithium alanate; diethyl ether
2: acetone; manganese (IV)-oxide
View Scheme
Multi-step reaction with 2 steps
1: diisobutylaluminium hydride / tetrahydrofuran; hexane / 1 h / -78 - -20 °C / Inert atmosphere
2: manganese(IV) oxide; sodium carbonate / acetone / 0 - 25 °C / Inert atmosphere
View Scheme
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

4'-((diphenylphosphinoyl)methylene)-2,2':6',2''-terpyridine
208597-43-7

4'-((diphenylphosphinoyl)methylene)-2,2':6',2''-terpyridine

C42H34N6

C42H34N6

Conditions
ConditionsYield
With lithium diisopropyl amide98%
Br(1-)*C41H48O2PS(1+)

Br(1-)*C41H48O2PS(1+)

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

C54H72O4S2

C54H72O4S2

Conditions
ConditionsYield
With sodium hydroxide In dichloromethane; water at 20℃; for 10h;98%
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

(1E)-1-(2,6,6-trimethylcyclohex-1-enyl)-3-methyl-1,4-pentadien-3-ol
59057-30-6

(1E)-1-(2,6,6-trimethylcyclohex-1-enyl)-3-methyl-1,4-pentadien-3-ol

triphenylphosphine
603-35-0

triphenylphosphine

beta-carotene
7235-40-7

beta-carotene

Conditions
ConditionsYield
Stage #1: (1E)-1-(2,6,6-trimethylcyclohex-1-enyl)-3-methyl-1,4-pentadien-3-ol; triphenylphosphine With hydrogenchloride In methanol; water at 45℃; for 1h;
Stage #2: (2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial With 1,2-bis (3-methylimidazolium-1-yl) ethane dihydroxide; sodium carbonate In methanol; water at 20℃; for 3h; Reagent/catalyst; Temperature; Wittig Olefination; Inert atmosphere;
95%
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

<5-((S)-4-Hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadienyl>triphenylphosphoniumbromid

<5-((S)-4-Hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadienyl>triphenylphosphoniumbromid

A

(3S,3'S)-astaxanthin
472-61-7

(3S,3'S)-astaxanthin

B

(3R,3'S)-3,3′-dihydroxy-β,β′-caroten-4,4′-dione
71772-51-5

(3R,3'S)-3,3′-dihydroxy-β,β′-caroten-4,4′-dione

Conditions
ConditionsYield
With sodium methylate In methanol at 0 - 25℃; for 4h;A 94.6%
B 4.2 % Chromat.
In various solvent(s) for 20h; Heating;A 97.7 % Chromat.
B 2.1 % Chromat.
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

C19H31O4P

C19H31O4P

canthaxanthin
514-78-3

canthaxanthin

Conditions
ConditionsYield
With sodium t-butanolate In dimethyl sulfoxide; toluene at -20℃; for 6h; Reagent/catalyst; Temperature; Solvent;92.1%
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

<(2'E,4'E)-5'-(2,6,6-trimethyl-4-oxo-2-cyclohexen-1-yl)-3'-methyl-2',4'-pentadienyl>triphenylphosphonium chloride
83020-78-4

<(2'E,4'E)-5'-(2,6,6-trimethyl-4-oxo-2-cyclohexen-1-yl)-3'-methyl-2',4'-pentadienyl>triphenylphosphonium chloride

3-oxo-12'-apo-ε-caroten-12'-al
143077-43-4

3-oxo-12'-apo-ε-caroten-12'-al

Conditions
ConditionsYield
With sodium methylate In methanol; dichloromethane at -20℃;92%
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

<5-(4'-Hydroxy-2',6',6'-trimethyl-3'-oxo-1',4'-cyclohexadien-1'-yl)-3-methyl-2,4-pentadienyl>triphenylphosphoniumbromid

<5-(4'-Hydroxy-2',6',6'-trimethyl-3'-oxo-1',4'-cyclohexadien-1'-yl)-3-methyl-2,4-pentadienyl>triphenylphosphoniumbromid

Conditions
ConditionsYield
With ethyloxirane91.3%
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

<(2E,4E)-5-<(R)-4-hydroxy-2,6,6-trimethylcyclohex-1-enyl>-3-methylpenta-2,4-dienyl>-triphenylphosphonium chloride

<(2E,4E)-5-<(R)-4-hydroxy-2,6,6-trimethylcyclohex-1-enyl>-3-methylpenta-2,4-dienyl>-triphenylphosphonium chloride

Conditions
ConditionsYield
With ethyloxirane In ethanol for 20h; Heating;90%
diethoxyphosphoryl-acetic acid ethyl ester
867-13-0

diethoxyphosphoryl-acetic acid ethyl ester

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

diethyl-10,10'-diapocarotene-10,10'-dioate
53163-55-6

diethyl-10,10'-diapocarotene-10,10'-dioate

Conditions
ConditionsYield
With sodium hydride In tetrahydrofuran at 20℃; for 0.5h;88%
L-valine
72-18-4

L-valine

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

C20H28N2O4(2-)*2Na(1+)

C20H28N2O4(2-)*2Na(1+)

Conditions
ConditionsYield
With sodium methylate In methanol; toluene Ambient temperature;87%
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

Z-(3,7-dimethylocta-2,6-dienyl)diphenylphosphine oxide
70143-03-2

Z-(3,7-dimethylocta-2,6-dienyl)diphenylphosphine oxide

A

(6Z,8E,10E,12E,14E,16E,18Z)-2,6,10,15,19,23-hexamethyl-tetracosa-2,6,8,10,12,14,16,18,22-nonaene
13832-81-0, 53872-51-8, 70191-51-4, 81738-47-8, 81738-48-9, 89064-90-4, 89064-91-5, 89164-53-4

(6Z,8E,10E,12E,14E,16E,18Z)-2,6,10,15,19,23-hexamethyl-tetracosa-2,6,8,10,12,14,16,18,22-nonaene

B

2,6,10,15,19,23-hexamethyl-2,6,8,10,12,14,16,18,22-tetracosanonaene
53872-51-8

2,6,10,15,19,23-hexamethyl-2,6,8,10,12,14,16,18,22-tetracosanonaene

C

(6Z,8E,10E,12E,14E,16E,18E)-2,6,10,15,19,23-Hexamethyl-tetracosa-2,6,8,10,12,14,16,18,22-nonaene
13832-81-0, 53872-51-8, 70191-51-4, 81738-47-8, 81738-48-9, 89064-90-4, 89064-91-5, 89164-53-4

(6Z,8E,10E,12E,14E,16E,18E)-2,6,10,15,19,23-Hexamethyl-tetracosa-2,6,8,10,12,14,16,18,22-nonaene

Conditions
ConditionsYield
With n-butyllithium In tetrahydrofuran for 3h; Ambient temperature;A 86%
B n/a
C n/a
2,7-dimethyl-octa-2t,4c,6t-trienedial
181963-79-1

2,7-dimethyl-octa-2t,4c,6t-trienedial

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

[(4E)-5-(4-hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadienyl]-triphenylphosphonium bromide

[(4E)-5-(4-hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadienyl]-triphenylphosphonium bromide

Astaxanthin

Astaxanthin

Conditions
ConditionsYield
Stage #1: 2,7-dimethyl-octa-2t,4c,6t-trienedial; (2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial; [(4E)-5-(4-hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadienyl]-triphenylphosphonium bromide In 2-(2-methoxyethoxy)ethyl alcohol; dichloromethane at 21℃; for 0.5h; Wittig Reaction;
Stage #2: With sodium methylate In methanol; 2-(2-methoxyethoxy)ethyl alcohol; dichloromethane at 0 - 3℃; for 2.5h;
Stage #3: With acetic acid In methanol; 2-(2-methoxyethoxy)ethyl alcohol; dichloromethane at 105 - 107℃; for 4h; Product distribution / selectivity;
84%
Stage #1: 2,7-dimethyl-octa-2t,4c,6t-trienedial; (2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial; [(4E)-5-(4-hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadienyl]-triphenylphosphonium bromide In 2-methoxy-ethanol at 25 - 45℃; for 0.5h; Wittig Reaction;
Stage #2: With sodium methylate In methanol; 2-methoxy-ethanol at 25 - 30℃; for 2.16667h;
Stage #3: With acetic acid In methanol; 2-methoxy-ethanol at 100℃; for 4h; Product distribution / selectivity;
82.2%
Stage #1: 2,7-dimethyl-octa-2t,4c,6t-trienedial; (2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial; [(4E)-5-(4-hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadienyl]-triphenylphosphonium bromide In 2-(2-methoxyethoxy)ethyl alcohol at 25 - 80℃; for 0.5h; Wittig Reaction;
Stage #2: With sodium methylate In methanol; 2-(2-methoxyethoxy)ethyl alcohol at 25 - 30℃; for 2.5h;
Stage #3: With acetic acid In methanol; 2-(2-methoxyethoxy)ethyl alcohol at 100℃; for 4h; Product distribution / selectivity;
75.2%
Stage #1: 2,7-dimethyl-octa-2t,4c,6t-trienedial; (2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial; [(4E)-5-(4-hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadienyl]-triphenylphosphonium bromide In 1-methoxy-2-propanol at 25 - 80℃; for 0.5h; Wittig Reaction;
Stage #2: With sodium methylate In methanol; 1-methoxy-2-propanol at 25 - 30℃; for 2.16667h;
Stage #3: With acetic acid In methanol; 1-methoxy-2-propanol at 100℃; for 4h; Product distribution / selectivity;
70.57%
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

<(4E)-5-(4-Hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexenyl)-3-methyl-2,4-pentadienyl>triphenylphosphoniumbromid

<(4E)-5-(4-Hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexenyl)-3-methyl-2,4-pentadienyl>triphenylphosphoniumbromid

Conditions
ConditionsYield
With ethyloxirane; water 1.) reflux; 2.) ethanol, reflux, 18 h; (Z->E) isomerisation in heptane;82.5%
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

<5-((R)-4-Hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexenyl)-3-methyl-2,4-pentadienyl>triphenylphosphoniumbromid

<5-((R)-4-Hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexenyl)-3-methyl-2,4-pentadienyl>triphenylphosphoniumbromid

(3R,3'R)-3,3′-dihydroxy-β,β′-caroten-4,4′-dione
60760-95-4

(3R,3'R)-3,3′-dihydroxy-β,β′-caroten-4,4′-dione

Conditions
ConditionsYield
81.2%
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

L-phenylalanine
63-91-2

L-phenylalanine

C28H28N2O4(2-)*2Na(1+)

C28H28N2O4(2-)*2Na(1+)

Conditions
ConditionsYield
With sodium methylate In methanol; toluene Ambient temperature;81%
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

(all-E)-8-hydroxy-2,7-dimethylocta-2,4,6-trienal
76686-46-9

(all-E)-8-hydroxy-2,7-dimethylocta-2,4,6-trienal

Conditions
ConditionsYield
With sodium tetrahydroborate In ethanol80%
With sodium tetrahydroborate In methanol
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

benzo[d][1,3]dithiol-2-yltriphenylphosphonium tetrafluoroborate

benzo[d][1,3]dithiol-2-yltriphenylphosphonium tetrafluoroborate

(2E,4E,6E)-8-Benzo[1,3]dithiol-2-ylidene-2,7-dimethyl-octa-2,4,6-trienal
121881-08-1

(2E,4E,6E)-8-Benzo[1,3]dithiol-2-ylidene-2,7-dimethyl-octa-2,4,6-trienal

Conditions
ConditionsYield
With sodium hydroxide In dichloromethane80%
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

[(4E)-5-(4-hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadienyl]-triphenylphosphonium bromide

[(4E)-5-(4-hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadienyl]-triphenylphosphonium bromide

3,3'-dihydroxy-β,β-carotene-4,4'-dione
7542-45-2

3,3'-dihydroxy-β,β-carotene-4,4'-dione

Conditions
ConditionsYield
Stage #1: (2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial; [(4E)-5-(4-hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadienyl]-triphenylphosphonium bromide With ethyloxirane In isopropyl alcohol for 18h; Heating / reflux;
Stage #2: In dichloromethane Heating / reflux;
80%
In various solvent(s) at 63℃; for 20h; Condensation; Wittig reaction;55%
With ethyloxirane at 63℃; for 20h;54.7%
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

(2E,4E)-<5-(2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadien-1-yl>triphenylphosphonium bromide
63184-93-0

(2E,4E)-<5-(2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadien-1-yl>triphenylphosphonium bromide

canthaxanthin
514-78-3

canthaxanthin

Conditions
ConditionsYield
With sodium methylate In methanol; dichloromethane at -10℃; for 1h;78%
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

neryltriphenylphosphonium bromide
60346-00-1

neryltriphenylphosphonium bromide

A

(6Z,8E,10E,12E,14E,16E,18Z)-2,6,10,15,19,23-hexamethyl-tetracosa-2,6,8,10,12,14,16,18,22-nonaene
13832-81-0, 53872-51-8, 70191-51-4, 81738-47-8, 81738-48-9, 89064-90-4, 89064-91-5, 89164-53-4

(6Z,8E,10E,12E,14E,16E,18Z)-2,6,10,15,19,23-hexamethyl-tetracosa-2,6,8,10,12,14,16,18,22-nonaene

B

(6Z,8Z,10E,12E,14E,16Z,18Z)-2,6,10,15,19,23-Hexamethyl-tetracosa-2,6,8,10,12,14,16,18,22-nonaene
13832-81-0, 53872-51-8, 70191-51-4, 81738-47-8, 81738-48-9, 89064-90-4, 89064-91-5, 89164-53-4

(6Z,8Z,10E,12E,14E,16Z,18Z)-2,6,10,15,19,23-Hexamethyl-tetracosa-2,6,8,10,12,14,16,18,22-nonaene

Conditions
ConditionsYield
In tetrahydrofuran at 0℃;A 77%
B n/a
In tetrahydrofuran at 0℃;
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

(all-E)-5-<(4R)-4-hydroxy-2,6,6-trimethylcyclohex-1-enyl>-3-methyl-2,4-pentadienyltriphenylphosphonium bromide

(all-E)-5-<(4R)-4-hydroxy-2,6,6-trimethylcyclohex-1-enyl>-3-methyl-2,4-pentadienyltriphenylphosphonium bromide

(all-E)-(3R)-3-hydroxy-12'-apo-β-caroten-12'-al
62742-02-3

(all-E)-(3R)-3-hydroxy-12'-apo-β-caroten-12'-al

Conditions
ConditionsYield
With sodium hydride In dichloromethane at 20℃; for 12h;77%
(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial
5056-17-7

(2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial

[(4E)-5-(4-hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadienyl]-triphenylphosphonium bromide

[(4E)-5-(4-hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadienyl]-triphenylphosphonium bromide

A

3,3'-dihydroxy-β,β-carotene-4,4'-dione
7542-45-2

3,3'-dihydroxy-β,β-carotene-4,4'-dione

B

semi-astacene
106776-90-3

semi-astacene

C

Triphenylphosphine oxide
791-28-6

Triphenylphosphine oxide

Conditions
ConditionsYield
Stage #1: (2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial; [(4E)-5-(4-hydroxy-2,6,6-trimethyl-3-oxo-1-cyclohexen-1-yl)-3-methyl-2,4-pentadienyl]-triphenylphosphonium bromide With sodium methylate In methanol; dichloromethane at -5℃; for 19.6 - 20.5h;
Stage #2: With acetic acid In methanol; dichloromethane Product distribution / selectivity;
A 75.8%
B n/a
C n/a

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