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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

CROCONIC ACID

Cas:488-86-8

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

inquiry

Hebei yanxi chemical co.,LTD.

hebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and developm

CROCONIC ACID CAS NO.488-86-8

Cas:488-86-8

Min.Order:1 Metric Ton

FOB Price: $1.0 / 3.0

Type:Trading Company

inquiry

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

Croconic acid

Cas:488-86-8

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

With our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturin

Croconic acid CAS 488-86-8

Cas:488-86-8

Min.Order:1 Kilogram

FOB Price: $3.0 / 10.0

Type:Trading Company

inquiry

Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

Pharmaceutical Grade CAS 488-86-8 with competitive price

Cas:488-86-8

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

inquiry

Wuhan Han Sheng New Material Technology Co.,Ltd

Our Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We

TIANFU-CHEM NA

Cas:488-86-8

Min.Order:10 Kilogram

Negotiable

Type:Trading Company

inquiry

Shanghai Upbio Tech Co.,Ltd

1.In No Less 10 years exporting experience. you 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 Specializ

4-Cyclopentene-1,2,3-trione,4,5-dihydroxy-

Cas:488-86-8

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Qingdao Beluga Import and Export Co., LTD

CROCONIC ACID CAS:488-86-8 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 quality organic intermediates

CROCONIC ACID CAS:488-86-8

Cas:488-86-8

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

4-Cyclopentene-1,2,3-trione,4,5-dihydroxy-

Cas:488-86-8

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

4-Cyclopentene-1,2,3-trione,4,5-dihydroxy-

Cas:488-86-8

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

HANGZHOU YUNUO CHEMICAL CO.,LTD

superior quality Appearance:gold-coloured powder Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Application:Used as Pharmaceutical Intermediates Transportati

4-Cyclopentene-1,2,3-trione,4,5-dihydroxy-

Cas:488-86-8

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

Hangzhou Keyingchem Co.,Ltd

Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det

Crocic acid

Cas:488-86-8

Min.Order:0 Metric Ton

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

CROCONIC ACID

Cas:488-86-8

Min.Order:4 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou J&H Chemical Co., Ltd.

J&H CHEM 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. J&H CHEM has some Manufacturing base in Jia

4-Cyclopentene-1,2,3-trione,4,5-dihydroxy-

Cas:488-86-8

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Shaanxi Cuicheng Biomedical Technology Co., Ltd.

Why Choose Us: 1. Factory direct sales, so we can provide the competitive price and high quality product base on 8 years of production and R&D experience. 2. It is available in stock for quick shipment.Products could be packaged according to cu

CROCONIC ACID

Cas:488-86-8

Min.Order:1 Gram

Negotiable

Type:Other

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

4-Cyclopentene-1,2,3-trione,4,5-dihydroxy-

Cas:488-86-8

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

inquiry

Jiangsu Qianyu Molecular Technology Co., LTD.

Our Advantages A. International Top level TechnologyOur company owned biomedicine experts are famous at home and abroad with rich experience in research and development in the field of efficient chiral functional molecules research and development an

Factory SellsCROCONIC ACID

Cas:488-86-8

Min.Order:0

Negotiable

Type:Trading Company

inquiry

EAST CHEMSOURCES LIMITED

factory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B

Crocic acid

Cas:488-86-8

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

inquiry

Shandong Mopai Biotechnology Co., LTD

Shandong Mopai Biotechnology 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 chemicals. W

Crocic acid

Cas:488-86-8

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

KAISA GROUP INC

1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer

Crocic acid

Cas:488-86-8

Min.Order:1 Metric Ton

FOB Price: $1.5

Type:Trading Company

inquiry

Golden Pharma Co., Limited

GOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation

CROCONIC ACID

Cas:488-86-8

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

Win-Win chemical Co.Ltd

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

CROCONIC ACID Cas no.488-86-8 97%

Cas:488-86-8

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Bluecrystal chem-union

We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp

Crocic acid

Cas:488-86-8

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Trading Company

inquiry

Hebei Mojin Biotechnology Co.,Ltd

1, High quality with competitive price:2, Fast and safe delivery3.Excellent pre-sales and after-sales service4. Well-trained and professional technologist and sales with rich experience in the field for 5-10 yearsAppearance:see detailed specification

4-Cyclopentene-1,2,3-trione,4,5-dihydroxy-

Cas:488-86-8

Min.Order:0

Negotiable

Type:Trading Company

inquiry

GIHI CHEMICALS CO.,LIMITED

Lower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe

4-Cyclopentene-1,2,3-trione,4,5-dihydroxy-

Cas:488-86-8

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Henan Allgreen Chemical Co.,Ltd

high quality Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea

4-Cyclopentene-1,2,3-trione

Cas:488-86-8

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Hunan chemfish Pharmaceutical co.,Ltd

Hunan chemfish Pharmaceutical co.,Ltd a comprehensive enterprise, is located in High-Tech Science Park,Changsha,Chia . Specializing in R&D, manufacture and marketing, we provide a wide range of products and the most professional services to meet the

Croconic acid

Cas:488-86-8

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Wuxi TAA Chemical Industry Co.,LTD.

1.A strong technical force and advanced processing equipments. The quality of the products has been strictly inspected and all kinds of index have reached or exceeded domestic and international standards.2. Now we have established long-term stable re

4-Cyclopentene-1,2,3-trione,4,5-dihydroxy-

Cas:488-86-8

Min.Order:0

Negotiable

Type:Other

inquiry

Xian Changyue Biological Technology Co., Ltd.

best seller Application:API

CROCONIC ACID

Cas:488-86-8

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Henan Tianfu Chemical Co., Ltd.

Our advantage:Our company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scient

TIANFU-CHEM NA

Cas:488-86-8

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

maleic anhydride
930-60-9

maleic anhydride

croconic acid
488-86-8

croconic acid

Conditions
ConditionsYield
Stage #1: maleic anhydride With sodium hydroxide; bromine In water at 0 - 20℃; for 1.66667h;
Stage #2: With hydrogenchloride In water at 0℃; Product distribution / selectivity;
88%
Stage #1: maleic anhydride With water; chlorine; potassium carbonate at 0 - 50℃; for 6h;
Stage #2: With hydrogenchloride at 10℃; Product distribution / selectivity;
66%
cyclopentene
142-29-0

cyclopentene

croconic acid
488-86-8

croconic acid

Conditions
ConditionsYield
Stage #1: cyclopentene With potassium hydroxide; bromine In water; benzene at 0 - 60℃; for 5h;
Stage #2: With hydrogenchloride In water; benzene at 5℃; Product distribution / selectivity;
83%
ccyclopentane-1,2,4-trione
15849-14-6

ccyclopentane-1,2,4-trione

croconic acid
488-86-8

croconic acid

Conditions
ConditionsYield
Stage #1: ccyclopentane-1,2,4-trione With 1,3-dichloro-5,5-dimethylhydantoin In 1,2-dichloro-ethane at 0℃; for 2h;
Stage #2: With sodium hydroxide In water; 1,2-dichloro-ethane at 0 - 50℃; for 4.5h;
Stage #3: With hydrogenchloride In water; 1,2-dichloro-ethane at 0℃; Product distribution / selectivity;
63%
D-myo-inositol
87-89-8

D-myo-inositol

croconic acid
488-86-8

croconic acid

Conditions
ConditionsYield
With nitric acid
sodium rhodizonate dibasic
523-21-7

sodium rhodizonate dibasic

A

croconic acid
488-86-8

croconic acid

B

hexaketocyclohexane
527-31-1

hexaketocyclohexane

Conditions
ConditionsYield
With oxygen In water Rate constant; Quantum yield; Irradiation; various pH;
tetrahydroxy-1,4-quinone
319-89-1

tetrahydroxy-1,4-quinone

croconic acid
488-86-8

croconic acid

Conditions
ConditionsYield
With manganese(IV) oxide; potassium carbonate
rhodizonic acid
118-76-3

rhodizonic acid

alkali carbonate

alkali carbonate

croconic acid
488-86-8

croconic acid

Conditions
ConditionsYield
Abdampfen an der Luft;
rhodizonic acid
118-76-3

rhodizonic acid

alkali

alkali

croconic acid
488-86-8

croconic acid

Conditions
ConditionsYield
Abdampfen an der Luft;
dipotassium-salt of/the/ rhodizonic acid

dipotassium-salt of/the/ rhodizonic acid

croconic acid
488-86-8

croconic acid

Conditions
ConditionsYield
With air; water at 80℃;
disodium-salt of tetrahydroxy-benzoquinone-(1.4)

disodium-salt of tetrahydroxy-benzoquinone-(1.4)

croconic acid
488-86-8

croconic acid

Conditions
ConditionsYield
With air; water at 80℃;
sodium-salt of rhodizonate of

sodium-salt of rhodizonate of

croconic acid
488-86-8

croconic acid

Conditions
ConditionsYield
With manganese(IV) oxide; potassium carbonate
D-myo-inositol
87-89-8

D-myo-inositol

nitric acid
7697-37-2

nitric acid

A

benzenehexol
608-80-0

benzenehexol

B

croconic acid
488-86-8

croconic acid

C

rhodizonic acid
118-76-3

rhodizonic acid

D

2.3.5.6-tetrahydroxy-benzoquinone-1.4)

2.3.5.6-tetrahydroxy-benzoquinone-1.4)

croconic acid dimethyl ether
36394-33-9

croconic acid dimethyl ether

water
7732-18-5

water

croconic acid
488-86-8

croconic acid

Conditions
ConditionsYield
beim Aufbewahren;
4,5-diethoxy-cyclopent-4-ene-1,2,3-trione
63183-46-0

4,5-diethoxy-cyclopent-4-ene-1,2,3-trione

moist air

moist air

croconic acid
488-86-8

croconic acid

cyclopentanedecaol
595-03-9

cyclopentanedecaol

reducing agent

reducing agent

croconic acid
488-86-8

croconic acid

hydrogenchloride
7647-01-0

hydrogenchloride

2,2,2',2'-tetraethoxy-5,5'-dimethoxy-4,4-ethanediyldiamino-bis-cyclopent-4-ene-1,3-dione

2,2,2',2'-tetraethoxy-5,5'-dimethoxy-4,4-ethanediyldiamino-bis-cyclopent-4-ene-1,3-dione

croconic acid
488-86-8

croconic acid

4-ethoxy-5-hydroxy-cyclopent-4-ene-1,2,3-trione
854403-77-3

4-ethoxy-5-hydroxy-cyclopent-4-ene-1,2,3-trione

water
7732-18-5

water

croconic acid
488-86-8

croconic acid

2,2-diethoxy-4,5-dihydroxy-cyclopent-4-ene-1,3-dione

2,2-diethoxy-4,5-dihydroxy-cyclopent-4-ene-1,3-dione

water
7732-18-5

water

croconic acid
488-86-8

croconic acid

triaminophloroglucinol hydrogen sulfate
114491-15-5

triaminophloroglucinol hydrogen sulfate

manganese dioxide

manganese dioxide

natrium carbonate

natrium carbonate

croconic acid
488-86-8

croconic acid

3,6-diamino-benzene-1,2,4,5-tetraol; dihydrochloride
643-00-5

3,6-diamino-benzene-1,2,4,5-tetraol; dihydrochloride

potassium carbonate

potassium carbonate

manganese dioxide

manganese dioxide

croconic acid
488-86-8

croconic acid

barium croconate

barium croconate

croconic acid
488-86-8

croconic acid

Conditions
ConditionsYield
With sulfuric acid In water for 1h; warming;
croconic acid
488-86-8

croconic acid

boric acid
11113-50-1

boric acid

1,4-Dioxane-2,3,5,6-tetrone
213967-57-8

1,4-Dioxane-2,3,5,6-tetrone

Li(1+)*C7BO9(1-)

Li(1+)*C7BO9(1-)

Conditions
ConditionsYield
In water at 20℃; under 0 Torr; for 8h; Flow reactor;99.1%
croconic acid
488-86-8

croconic acid

malononitrile
109-77-3

malononitrile

1,2,3-tris(dicyanomethylene)-4-cyclopentene-4,5-diol
72905-24-9

1,2,3-tris(dicyanomethylene)-4-cyclopentene-4,5-diol

Conditions
ConditionsYield
In water at 85 - 90℃; for 0.25h;97%
croconic acid
488-86-8

croconic acid

2-methyl-1-phenyl-(1H)-benz[cd]indolium iodide

2-methyl-1-phenyl-(1H)-benz[cd]indolium iodide

2-[[2-hydroxy-3-[(1-phenylbenz[cd]indole-2(1H)-ylidene)methyl]-4,5-dioxo-2-cyclopentene-1-ylidene]methyl]-1-phenylbenzo[cd]indolium

2-[[2-hydroxy-3-[(1-phenylbenz[cd]indole-2(1H)-ylidene)methyl]-4,5-dioxo-2-cyclopentene-1-ylidene]methyl]-1-phenylbenzo[cd]indolium

Conditions
ConditionsYield
In toluene; butan-1-ol at 107℃; for 3h; Inert atmosphere;94.8%
croconic acid
488-86-8

croconic acid

C20H26N2

C20H26N2

C45H50N4O3

C45H50N4O3

Conditions
ConditionsYield
In propan-1-ol; toluene for 2h; Reflux;93%
croconic acid
488-86-8

croconic acid

C23H27N

C23H27N

C51H52N2O3

C51H52N2O3

Conditions
ConditionsYield
In toluene; butan-1-ol for 1h; Reflux;91%
croconic acid
488-86-8

croconic acid

2,3,3-trimethyl-5-(4-nitrophenyl)-3H-indole

2,3,3-trimethyl-5-(4-nitrophenyl)-3H-indole

3-[3,3-dimethyl-5-(4-nitrophenyl)-1,3-dihydro-indol-2-ylidenemethyl]-5-[3,3-dimethyl-5-(4-nitro-phenyl)-3H-indol-2-ylmethylene]-4-hydroxy-cyclopent-3-ene-1,2-dione

3-[3,3-dimethyl-5-(4-nitrophenyl)-1,3-dihydro-indol-2-ylidenemethyl]-5-[3,3-dimethyl-5-(4-nitro-phenyl)-3H-indol-2-ylmethylene]-4-hydroxy-cyclopent-3-ene-1,2-dione

Conditions
ConditionsYield
In toluene; butan-1-ol at 110℃; for 3h; Dean-Stark;87%
2,3,3-trimethylbenzo[e]indole
41532-84-7

2,3,3-trimethylbenzo[e]indole

croconic acid
488-86-8

croconic acid

5-((1,1-dimethyl-1H-benzo[e]indol-3-ium-2-yl)methylene)-2-hydroxy-3,4-dioxocyclopent-1-enolate

5-((1,1-dimethyl-1H-benzo[e]indol-3-ium-2-yl)methylene)-2-hydroxy-3,4-dioxocyclopent-1-enolate

Conditions
ConditionsYield
In water; acetone at 50℃; for 96h; Solvent; Temperature;86%
croconic acid
488-86-8

croconic acid

6-bromo-N-methyl-2-quinaldinium iodide
59105-86-1

6-bromo-N-methyl-2-quinaldinium iodide

C27H18Br2N2O3
1005495-50-0

C27H18Br2N2O3

Conditions
ConditionsYield
With quinoline In ethanol at 80℃; for 24h;85%
croconic acid
488-86-8

croconic acid

6-iodo-N-methyl-2-quinaldinium iodide
10352-61-1

6-iodo-N-methyl-2-quinaldinium iodide

C27H18I2N2O3
1005495-52-2

C27H18I2N2O3

Conditions
ConditionsYield
With quinoline In ethanol at 80℃; for 24h;85%
croconic acid
488-86-8

croconic acid

2-amino-5-hydroxybenzoic acid
394-31-0

2-amino-5-hydroxybenzoic acid

C19H12N2O9

C19H12N2O9

Conditions
ConditionsYield
In methanol at 60℃;85%
croconic acid
488-86-8

croconic acid

5-bromo-2-methyl-3-octyl-1,3-benzothiazol-3-ium iodide
100362-83-2

5-bromo-2-methyl-3-octyl-1,3-benzothiazol-3-ium iodide

5-((5-cyano-3,3-dimethyl-3H-indol-1-ium-2-yl)methylene)-2-hydroxy-3,4-dioxocyclopent-1-enolate

5-((5-cyano-3,3-dimethyl-3H-indol-1-ium-2-yl)methylene)-2-hydroxy-3,4-dioxocyclopent-1-enolate

Conditions
ConditionsYield
In water; acetone at 0 - 3℃; for 48h;85%
croconic acid
488-86-8

croconic acid

tetrabutylammomium bromide
1643-19-2

tetrabutylammomium bromide

iron(III) chloride
7705-08-0

iron(III) chloride

tetra-n-butylammonium tris(croconato)ferrate(III)

tetra-n-butylammonium tris(croconato)ferrate(III)

Conditions
ConditionsYield
With NaOH In water byproducts: NaCl, NaBr; NaOH and (C4H9)4NBr added to C5O3(OH)2*3H2O in H2O, FeCl3 added dropwise; extd. (CH2Cl2), anhyd. Na2SO4 added, filtered, evapd. (vac.), crystd. (MeOH/Et2O) for days; elem. anal.;83%
croconic acid
488-86-8

croconic acid

1-(thiophen-2-yl)piperidine-4-carboxylic acid

1-(thiophen-2-yl)piperidine-4-carboxylic acid

C25H24N2O7S2

C25H24N2O7S2

Conditions
ConditionsYield
In toluene; butan-1-ol for 1h; Reflux;82%
croconic acid
488-86-8

croconic acid

C17H17NO
1303477-72-6

C17H17NO

C39H32N2O5

C39H32N2O5

Conditions
ConditionsYield
In toluene; butan-1-ol for 2h; Reflux;81%
5-bromo-2,3,3-trimethyl-3H-indole
54136-24-2

5-bromo-2,3,3-trimethyl-3H-indole

croconic acid
488-86-8

croconic acid

3-(5-bromo-3,3-dimethyl-1,3-dihydro-indol-2-ylidenemethyl)-5-(5-bromo-3,3-dimethyl-3H-indol-2-ylmethylene)-4-hydroxy-cyclopent-3-ene-1,2-dione

3-(5-bromo-3,3-dimethyl-1,3-dihydro-indol-2-ylidenemethyl)-5-(5-bromo-3,3-dimethyl-3H-indol-2-ylmethylene)-4-hydroxy-cyclopent-3-ene-1,2-dione

Conditions
ConditionsYield
In toluene; butan-1-ol at 110℃; for 3h; Dean-Stark;80%
croconic acid
488-86-8

croconic acid

1-thiophen-2-yl-piperidine-4-carboxylic acid decylester

1-thiophen-2-yl-piperidine-4-carboxylic acid decylester

C45H64N2O7S2

C45H64N2O7S2

Conditions
ConditionsYield
In toluene; butan-1-ol for 1h; Inert atmosphere; Reflux;79.9%
croconic acid
488-86-8

croconic acid

catena(triaqua-(μ-2-croconato-O,O',O",O"')calcium(II)) calcium croconate trihydrate

catena(triaqua-(μ-2-croconato-O,O',O",O"')calcium(II)) calcium croconate trihydrate

Conditions
ConditionsYield
With calcium acetate In water at 180℃; for 2h;79%
croconic acid
488-86-8

croconic acid

N-benzyl-N-[2-(prop-2-yn-1-yloxy)ethyl]thiophen-2-amine

N-benzyl-N-[2-(prop-2-yn-1-yloxy)ethyl]thiophen-2-amine

C37H32N2O5S2

C37H32N2O5S2

Conditions
ConditionsYield
In toluene; butan-1-ol for 1h; Inert atmosphere; Reflux;79%
croconic acid
488-86-8

croconic acid

2-(N,N-dibutylamino)thiophene

2-(N,N-dibutylamino)thiophene

(E)-2-(5-(dibutylamino)thiophen-2-yl)-5-(5-(dibutyliminio)thiophen-2(5H)-ylidene)-3,4-dioxocyclopent-1-en-1-olate

(E)-2-(5-(dibutylamino)thiophen-2-yl)-5-(5-(dibutyliminio)thiophen-2(5H)-ylidene)-3,4-dioxocyclopent-1-en-1-olate

Conditions
ConditionsYield
In toluene; butan-1-ol Reflux;78%
croconic acid
488-86-8

croconic acid

1,2-diamino-benzene
95-54-5

1,2-diamino-benzene

2,3-dihydroxy-1H-cyclopenta[b]quinoxalin-1-one
23774-23-4

2,3-dihydroxy-1H-cyclopenta[b]quinoxalin-1-one

Conditions
ConditionsYield
With acetic acid at 40℃; for 2h; Inert atmosphere;78%
2,3,3-trimethylindoleniune
1640-39-7

2,3,3-trimethylindoleniune

croconic acid
488-86-8

croconic acid

3-[3,3-Dimethyl-1,3-dihydro-indol-(2E)-ylidenemethyl]-5-[1-(3,3-dimethyl-3H-indol-2-yl)-meth-(Z)-ylidene]-4-hydroxy-cyclopent-3-ene-1,2-dione

3-[3,3-Dimethyl-1,3-dihydro-indol-(2E)-ylidenemethyl]-5-[1-(3,3-dimethyl-3H-indol-2-yl)-meth-(Z)-ylidene]-4-hydroxy-cyclopent-3-ene-1,2-dione

Conditions
ConditionsYield
In butan-1-ol; benzene Heating;76%
croconic acid
488-86-8

croconic acid

2,6-di-tert-butyl-4-methylpyrilium hexafluorophosphate

2,6-di-tert-butyl-4-methylpyrilium hexafluorophosphate

4-[(3-[(2,6-bis(1,1-dimethylethyl)-4H-pyran-4-ylidene)methyl]-2-hydroxy-4,5-dioxo-2-cyclopenten-1-ylidene)methyl]-2,6-bis(1,1-dimethylethyl)pyrylium inner salt

4-[(3-[(2,6-bis(1,1-dimethylethyl)-4H-pyran-4-ylidene)methyl]-2-hydroxy-4,5-dioxo-2-cyclopenten-1-ylidene)methyl]-2,6-bis(1,1-dimethylethyl)pyrylium inner salt

Conditions
ConditionsYield
With pyridine In methanol for 3h; Condensation; Heating;75%
cholesteryl N-methyl-2-quinaldinium-6-yl carbonate iodide

cholesteryl N-methyl-2-quinaldinium-6-yl carbonate iodide

croconic acid
488-86-8

croconic acid

C83H108N2O9
1005495-54-4

C83H108N2O9

Conditions
ConditionsYield
With quinoline In ethanol at 80℃; for 24h;75%
croconic acid
488-86-8

croconic acid

N-ethyl-N-(2-(prop-2-yn-1-yloxy)ethyl)thiophen-2-amine

N-ethyl-N-(2-(prop-2-yn-1-yloxy)ethyl)thiophen-2-amine

C27H28N2O5S2

C27H28N2O5S2

Conditions
ConditionsYield
In toluene; butan-1-ol for 1h; Inert atmosphere; Reflux;74%
croconic acid
488-86-8

croconic acid

iron(III) chloride
7705-08-0

iron(III) chloride

tetraphenylphosphonium bromide
2751-90-8

tetraphenylphosphonium bromide

tetraphenylphosphonium tris(croconato)ferrate(III)

tetraphenylphosphonium tris(croconato)ferrate(III)

Conditions
ConditionsYield
With NaOH In water NaOH and P(C6H5)4Br added to C5O3(OH)2*3H2O in H2O, FeCl3 added dropwise; extd. (CH2Cl2), anhyd. Na2SO4 added, filtered, evapd. (vac.), crystd. (MeOH/Et2O); elem. anal.;72%
croconic acid
488-86-8

croconic acid

9-methyl-2,2',5,5'-tetra-tert-butyl-8H,8'H-7,7'-biacenaphthyleno[1,2-c]pyrrole

9-methyl-2,2',5,5'-tetra-tert-butyl-8H,8'H-7,7'-biacenaphthyleno[1,2-c]pyrrole

C93H94N4O3

C93H94N4O3

Conditions
ConditionsYield
In toluene; butan-1-ol at 80℃; for 1h;71%
1-(thiophen-2-yl)piperidine
19983-20-1

1-(thiophen-2-yl)piperidine

croconic acid
488-86-8

croconic acid

C23H24N2O3S2

C23H24N2O3S2

Conditions
ConditionsYield
In toluene; butan-1-ol Heating;70%
2,3,3-trimethyl-5-nitro-3H-indole
3484-22-8

2,3,3-trimethyl-5-nitro-3H-indole

croconic acid
488-86-8

croconic acid

3-[3,3-Dimethyl-5-nitro-1,3-dihydro-indol-(2E)-ylidenemethyl]-5-[1-(3,3-dimethyl-5-nitro-3H-indol-2-yl)-meth-(Z)-ylidene]-4-hydroxy-cyclopent-3-ene-1,2-dione

3-[3,3-Dimethyl-5-nitro-1,3-dihydro-indol-(2E)-ylidenemethyl]-5-[1-(3,3-dimethyl-5-nitro-3H-indol-2-yl)-meth-(Z)-ylidene]-4-hydroxy-cyclopent-3-ene-1,2-dione

Conditions
ConditionsYield
In butan-1-ol; benzene Heating;70%

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