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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

2-Methyl-1,3-cyclopentanedione

Cas:765-69-5

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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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 2-Methyl-1,3-Cyclopentanedione supplier in China

Cas:765-69-5

Min.Order:0 Metric Ton

Negotiable

Type:Manufacturers

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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

Factory Supply 2-methylcyclopentane-1,3-dione

Cas:765-69-5

Min.Order:1

Negotiable

Type:Other

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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

2-Methyl-1,3-cyclopentanedione

Cas:765-69-5

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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Hubei DiBo chemical co., LTD

Name:2-methyl-1,3-cyclopentanedione CAS NO: 765-69-5 Grade:Medical scientific research and export Molecular formula:C6H8O2 Molecular weight:121.12 Product Quality 12 years of chemical raw materials Mature operation of the industry Syste

2-methyl-1,3-cyclopentanedione /cas:765-69-5 /Raw material spot

Cas:765-69-5

Min.Order:25 Kilogram

FOB Price: $1.0 / 2.0

Type:Other

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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

2-Methyl-1,3-cyclopentanedione

Cas:765-69-5

Min.Order:1 Kilogram

FOB Price: $9.0 / 99.0

Type:Trading Company

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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

New production CAS 765-69-5 with best quality

Cas:765-69-5

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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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

1,3-Cyclopentanedione,2-methyl- 765-69-5

Cas:765-69-5

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Baoji Guokang Healthchem co.,ltd

Our company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At prese

2-Methyl-1,3-cyclopentanedione 99%

Cas:765-69-5

Min.Order:1 Kilogram

FOB Price: $60.0 / 70.0

Type:Trading Company

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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

CAS NO.:765-69-5

Cas:765-69-5

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Xiamen Hisunny Chemical Co.,Ltd

Best quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia

2-Methyl-1,3-Cyclopentanedione

Cas:765-69-5

Min.Order:0

Negotiable

Type:Manufacturers

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Afine Chemicals Limited

Company Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments

2-METHYL-1,3-CYCLOPENTANEDIONE / CAS:765-69-5

Cas:765-69-5

Min.Order:1 Gram

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

2-Methyl-1,3-cyclopentanedione

Cas:765-69-5

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Henan Tianfu Chemical Co., Ltd.

Competitive Price High Quality Fast Delivery custom-made Welcome to Henan Tianfu Chemical Co., Ltd. website. Our company engages in Sodium Tripolyphosphate (STPP) and Sodium Hexametabphosphate (SHMP) production; development of noble me

765-69-5,2-Methyl-1,3-cyclopentanedione

Cas:765-69-5

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Siwei Development Group Ltd.

Product name: 2-Methyl-1,3-Cyclopentanedione CAS No.:765-69-5 Molecule Formula:C6H8O2 Molecule Weight:112.12 Purity: 99% Package: 25kg/drum Description:White or light yellow crystalline powder Manufacture Standards:Enterprise Standard

High Quality 2-Methyl-1,3-Cyclopentanedione in stock

Cas:765-69-5

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Henan Sinotech Import&Export Corporation

Chemical name: 2-methyl-1,3-cyclopentanedione English name: 2-methyl-1,3-cyclopentanedione CAS No: 765-69-5 Molecular formula: C6H8O2 Molecular weight: 121.12 Uses: medic

2-Methyl-1,3-cyclopentanedione

Cas:765-69-5

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

inquiry

Xiamen Jenny Chemical Technology Co., Ltd.

GMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,

2-Methylcyclopentane-1,3-dione

Cas:765-69-5

Min.Order:1 Milligram

Negotiable

Type:Trading Company

inquiry

Shanghai Minstar Chemical Co., Ltd

Product Name: 2-Methyl-1,3-cyclopentanedione Synonyms: 2-Methyl-1,3-cyclopentadione;2-METHYLCYCLOPENTAN-1,3-DIONE;2-METHYL-1,3-CYCLOPENTANEDIONE;METHYLCYCLE-D;2-Methylcyclopentane-1,3-dione,98%;1,3-Cyclopentanedione, 2-methyl-;2-METHYL-1,3-CYCL

2-Methyl-1,3-cyclopentanedione

Cas:765-69-5

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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

2-Methyl-1,3-cyclopentanedione

Cas:765-69-5

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

Hangzhou Dingyan Chem Co., Ltd

R & D enterprises have their own stock in stockAppearance:To be subject to the object Package:Customized Application:pharmaceutical intermediates Transportation:Air Port:Shanghai;Guangzhou

2-Methylcyclopentane-1,3-dione

Cas:765-69-5

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Lonwin Chemical Group Limited

Shanghai Lonwin Chemical company is a subsidiary of Lonwin Industry Group Limited, was established in 2011 and is headquartered in Shanghai, adjacent to China National Convention and Exhibition Center and Hongqiao transportation hub.Lonwinchem is

High Purity 2-Methyl-1,3-Cyclopentanedione 765-69-5

Cas:765-69-5

Min.Order:100 Kilogram

FOB Price: $100.0 / 150.0

Type:Other

inquiry

GIHI CHEMICALS CO.,LIMITED

high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,Pharmaceutical intermediates Transportation:air,sea,courier

2-Methyl-1,3-cyclopentanedione

Cas:765-69-5

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Shanghai Acmec Biochemical Technology Co., Ltd.

Acmec is a leading manufacturer and supplier of biochemical reagents and life science products. We have over 40,000 items in stock (real-time inventory) and offer discounted prices to registered members of the online store ( www.acmec.com.cn ) Appea

Acmec 2-Methyl-1,3-cyclopentanedione 500g

Cas:765-69-5

Min.Order:1 bottle

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

2-Methyl-1,3-cyclopentanedione

Cas:765-69-5

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Aecochem Corp.

Our clients, like BASF,CHEMO,Brenntag,ASR,Evonik,Merck and etc.Appearance:COA Storage:in stock Application:MSDS/TDS

2-Methyl-1,3-Cyclopentanedione

Cas:765-69-5

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Hubei Taiho Chemical Co.,LTD

TAIHO Unique Advantages:1.We're factory2.Free samples available3.Commodity inspection can be done4.ISO9001,Kosher certifications5.10 years experiences Storage:Store in cool &dry place Package:aluminium foil bag/fiber can/plastic drum Application:comp

2-Methyl-1,3-cyclopentanedione

Cas:765-69-5

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Hunan chemfish Pharmaceutical co.,Ltd

Hunan chemfish Pharmaceutical co.,Ltd.located in Lugu High-tech industral park ,Hunan province . with its own R&D center and more than 10000㎡manufacture plant . Chemfish owns 40 reactors from 1000L to 8000L. With complete auxiliary equipment as

2-Methyl-1,3-cyclopentanedione

Cas:765-69-5

Min.Order:0

Negotiable

Type:Manufacturers

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-Methyl-1,3-cyclopentanedione

Cas:765-69-5

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Xiamen AmoyChem Co.,Ltd

Amoychem is committed to providing the top-quality chemical products and services Internationally. We offer our customers with friendly, professional service and reliable, high performance products that have been manufactured according to the accredi

2-Methyl-1,3-Cyclopentanedione

Cas:765-69-5

Min.Order:0

Negotiable

Type:Other

inquiry

Guangdong Juda Chemical Industrial Co.,Limited

Appearance:solid or liquid Storage:sealed in cool and dry place Package:As customer's requested Application:Pharma Intermediate Transportation:by courier/air/sea Port:Any port in China

2-Methylcyclopentane-1,3-dione CAS No.765-69-5

Cas:765-69-5

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Synthetic route

Co{(N4C19H6(CH3)8)(CH2CH2COOC3H7)4(CH2COOC3H7)3}(CH2CHC(O)CH2CH2C(O))(1+)

Co{(N4C19H6(CH3)8)(CH2CH2COOC3H7)4(CH2COOC3H7)3}(CH2CHC(O)CH2CH2C(O))(1+)

A

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

B

1,4-Cyclohexanedione
637-88-7

1,4-Cyclohexanedione

Conditions
ConditionsYield
In methanol Irradiation (UV/VIS); anaerobic irradiation 1h with visible light at 20°C; analyzing products by GLC;A 69%
B 19%
In water Irradiation (UV/VIS); anaerobic irradiation 1h with visible light in single-compartment vesicle of N,N-dihexadecyl-Nα-(6-(trimethylammonio)hexanoyl)-L-alaninamide bromide at 20°C; phosphate-borate buffer; analyzing products by GLC;A 19%
B 67%
In benzene Irradiation (UV/VIS); anaerobic irradiation 1h with visible light at 20°C; analyzing products by GLC;A 57%
B 28%
tert-Butyl peroxybenzoate
614-45-9

tert-Butyl peroxybenzoate

1,3-cyclopentadione
3859-41-4

1,3-cyclopentadione

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

Conditions
ConditionsYield
With acetic acid; copper(l) chloride at 120℃;68%
succinic acid
110-15-6

succinic acid

propionyl chloride
79-03-8

propionyl chloride

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

Conditions
ConditionsYield
Stage #1: succinic acid With aluminum (III) chloride; nitromethane at 20℃; for 1h; Inert atmosphere;
Stage #2: propionyl chloride at 80℃; for 3h; Inert atmosphere;
63%
With aluminum oxide 1.) nitromethane, 2.) 80 deg C, 3 h; Multistep reaction;
Stage #1: succinic acid With aluminum (III) chloride In nitromethane for 3.5h; Reflux; Inert atmosphere;
Stage #2: propionyl chloride In nitromethane for 2.5h; Reflux; Inert atmosphere;
3-methylcyclopentane-1,2,4-trione
4505-54-8

3-methylcyclopentane-1,2,4-trione

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

Conditions
ConditionsYield
With semicarbazide hydrochloride anschliessendes Erhitzen mit KOH in Aethylenglykol;
3-methylcyclopentane-1,2,4-trione
4505-54-8

3-methylcyclopentane-1,2,4-trione

A

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

B

4-hydroxy-2-methyl-1,3-cyclopentanedione
4800-04-8

4-hydroxy-2-methyl-1,3-cyclopentanedione

Conditions
ConditionsYield
With ethanol; platinum Hydrogenation;
With ethanol; platinum
succinic acid anhydride
108-30-5

succinic acid anhydride

propionyl chloride
79-03-8

propionyl chloride

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

Conditions
ConditionsYield
With aluminium trichloride; nitromethane 1.) heating, 2.) 80 deg C, 3 h; Yield given. Multistep reaction;
2-(1-ethoxy-ethyl)-2-trimethylsilanyloxy-cyclobutanone
125113-32-8

2-(1-ethoxy-ethyl)-2-trimethylsilanyloxy-cyclobutanone

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

Conditions
ConditionsYield
With Nafion-H; trifluoroacetic acid at 85℃; for 10h; Yield given;
2-(Diphenylmethyl)-2-methyl-1,3-cyclopentandion

2-(Diphenylmethyl)-2-methyl-1,3-cyclopentandion

A

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

B

Diphenylmethane
101-81-5

Diphenylmethane

Conditions
ConditionsYield
With 9,10-dihydroanthracene In 1,3,5-trimethyl-benzene at 221℃; Kinetics; Rate constant; different temperatures; ΔG(excit.)300, ΔH(excit.), ΔS(excit.);A n/a
B 75 % Chromat.
2-Fluorenyl-2-methyl-1,3-cyclopentandion

2-Fluorenyl-2-methyl-1,3-cyclopentandion

A

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

B

9H-fluorene
86-73-7

9H-fluorene

Conditions
ConditionsYield
With 9,10-dihydroanthracene In 1,3,5-trimethyl-benzene at 221℃; Kinetics; Rate constant; different temperatures; ΔG(excit.)300, ΔH(excit.), ΔS(excit.);A n/a
B 82 % Chromat.
C<*>OCH2CH2COC<*>HCH2-Cob(III)7C3-ester (1)

C<*>OCH2CH2COC<*>HCH2-Cob(III)7C3-ester (1)

A

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

B

1,4-Cyclohexanedione
637-88-7

1,4-Cyclohexanedione

Conditions
ConditionsYield
N+C5Ala2C16 vesicle at 20℃; Irradiation; in aqueous phosphate-borate buffer;A 19 % Chromat.
B 67 % Chromat.
In methanol at 20℃; Irradiation;A 69 % Chromat.
B 19 % Chromat.
1,2-bis(trimethylsiloxy)cyclobutene
17082-61-0

1,2-bis(trimethylsiloxy)cyclobutene

1,1-dimethoxyethane
534-15-6

1,1-dimethoxyethane

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

Conditions
ConditionsYield
Stage #1: 1,2-bis(trimethylsiloxy)cyclobutene; 1,1-dimethoxyethane With boron trifluoride diethyl etherate In dichloromethane at -78 - 20℃; for 4h;
Stage #2: With trifluoroacetic acid for 24h; Heating; Further stages.;
(3-methyl-2,4,5-trioxo-cyclopentyl)-glyoxylic acid ethyl ester
781-38-4

(3-methyl-2,4,5-trioxo-cyclopentyl)-glyoxylic acid ethyl ester

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: aqueous phosphoric acid
2: water containing ethanol; platinum
View Scheme
C6H10N2O2
393125-77-4

C6H10N2O2

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

Conditions
ConditionsYield
With gold(III) tribromide; dimethylglyoxal In ethanol; water at 20℃; for 15h; pH=7;100 %Spectr.
1,3-cyclopentadione
3859-41-4

1,3-cyclopentadione

acetaldehyde
75-07-0

acetaldehyde

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

Conditions
ConditionsYield
With diethyl 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate; rac-Pro-OH In ethanol at 25℃;
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

2-methyl-propan-1-ol
78-83-1

2-methyl-propan-1-ol

3-isobutoxy-2-methyl-2-cyclopenten-1-one
22117-97-1

3-isobutoxy-2-methyl-2-cyclopenten-1-one

Conditions
ConditionsYield
With toluene-4-sulfonic acid In benzene for 16h; Heating;100%
With toluene-4-sulfonic acid100%
With toluene-4-sulfonic acid In benzene for 8h; Heating;99%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

methyl vinyl ketone
78-94-4

methyl vinyl ketone

2-methyl-2-(3-oxobutyl)-1,3-cyclopentanedione
25112-78-1

2-methyl-2-(3-oxobutyl)-1,3-cyclopentanedione

Conditions
ConditionsYield
With triethylamine In acetonitrile at 20℃;100%
With acetic acid In water at 75℃; for 4h;98%
With triethylamine In dichloromethane for 12h;95%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

3-methoxy-2-methylcyclopent-2-enone
3883-56-5

3-methoxy-2-methylcyclopent-2-enone

Conditions
ConditionsYield
In diethyl ether100%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

4-penten-3-one
1629-58-9

4-penten-3-one

2-(3-oxopentyl)-2-methylcyclopentane-1,3-diones
34927-37-2

2-(3-oxopentyl)-2-methylcyclopentane-1,3-diones

Conditions
ConditionsYield
With acetic acid; hydroquinone In water at 75℃;100%
With triethylamine In ethyl acetate for 120h;90%
With triethylamine In ethyl acetate at 25℃; for 12h;89%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

acrolein
107-02-8

acrolein

2-methyl-2-(2-formylethyl)-1,3-cyclopentanedione
66976-99-6

2-methyl-2-(2-formylethyl)-1,3-cyclopentanedione

Conditions
ConditionsYield
In water Ambient temperature;100%
In water at 20℃; for 18h;100%
In water at 20℃; for 18h; Inert atmosphere;100%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

1-iodo-5-hexyne
2468-56-6

1-iodo-5-hexyne

C12H16O2
1215086-43-3

C12H16O2

Conditions
ConditionsYield
With tetrabutyl ammonium fluoride In tetrahydrofuran100%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

dimethyl sulfate
77-78-1

dimethyl sulfate

3-methoxy-2-methylcyclopent-2-enone
3883-56-5

3-methoxy-2-methylcyclopent-2-enone

Conditions
ConditionsYield
With potassium carbonate In acetone for 8h; Reflux;99%
With potassium carbonate In acetone at 20 - 60℃; for 8h;95%
With potassium carbonate In acetone at 20℃; for 4h; Reflux;
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

1'-Hydroxymethyleugenol
31706-95-3

1'-Hydroxymethyleugenol

2-(3',4'-dimethoxycinnamyl)-2-methylcyclopentane-1,3-dione
160514-96-5

2-(3',4'-dimethoxycinnamyl)-2-methylcyclopentane-1,3-dione

Conditions
ConditionsYield
With tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran for 0.5h; Product distribution; Heating; further solvents and catalysts;98.6%
With tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran for 0.5h; Heating;98.6%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

1,1,1,3,3,3-hexamethyl-disilazane
999-97-3

1,1,1,3,3,3-hexamethyl-disilazane

2-methyl-3-(trimethylsilyloxy)cyclopent-2-enone
84348-14-1

2-methyl-3-(trimethylsilyloxy)cyclopent-2-enone

Conditions
ConditionsYield
With 1H-imidazole at 120℃; for 2h; Neat (no solvent);98%
With 1H-imidazole Heating;
With 1H-imidazole at 20 - 130℃; for 3h; Inert atmosphere;
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

allyl alcohol
107-18-6

allyl alcohol

2-allyl-2-methyl-1,3-cyclopentanedione
26828-48-8

2-allyl-2-methyl-1,3-cyclopentanedione

Conditions
ConditionsYield
With Ru(Cp*)(η3-C3H5)(p-CH3C6H5SO3)2 In dichloromethane; acetonitrile at 50℃; for 3h; regioselective reaction;98%
With tetrakis(triphenylphosphine) palladium(0); carbon dioxide In dichloromethane under 15200 Torr; for 24h; Ambient temperature;65%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

(4-hydroxyphenyl)methanol
623-05-2

(4-hydroxyphenyl)methanol

2-(4-hydroxybenzyl)-2-methyl-1,3-cyclopentanedione
112621-27-9

2-(4-hydroxybenzyl)-2-methyl-1,3-cyclopentanedione

Conditions
ConditionsYield
In water at 80℃; for 12h;97%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

1,1-dimethylhydrazine
57-14-7

1,1-dimethylhydrazine

2-methyl-1,3-cyclopentanedione-dimethylhydrazone
124015-86-7

2-methyl-1,3-cyclopentanedione-dimethylhydrazone

Conditions
ConditionsYield
for 4h; Heating;97%
With toluene-4-sulfonic acid In benzene Heating;96%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

(E)-3-(trimethylsilyl)-2-propenyl acetate
86422-21-1

(E)-3-(trimethylsilyl)-2-propenyl acetate

2-Methyl-2-((E)-3-trimethylsilanyl-allyl)-cyclopentane-1,3-dione
147974-05-8

2-Methyl-2-((E)-3-trimethylsilanyl-allyl)-cyclopentane-1,3-dione

Conditions
ConditionsYield
With 1,8-diazabicyclo[5.4.0]undec-7-ene; tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran for 34h; Ambient temperature;96%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

3-iodo-2-methyl-2-cyclopentenone
56778-49-5

3-iodo-2-methyl-2-cyclopentenone

Conditions
ConditionsYield
With iodine; triethylamine; triphenylphosphine In acetonitrile at 80 - 90℃; for 6h;96%
With triphenylphosphine diiodide92%
With triphenylphosphine diiodide; triethylamine In acetonitrile for 3h; Heating;92%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

1-(4-methoxylphenyl)-2-propen-1-ol
51410-44-7

1-(4-methoxylphenyl)-2-propen-1-ol

2-[(E)-3-(4-Methoxy-phenyl)-allyl]-2-methyl-cyclopentane-1,3-dione

2-[(E)-3-(4-Methoxy-phenyl)-allyl]-2-methyl-cyclopentane-1,3-dione

Conditions
ConditionsYield
With tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran Heating;95.4%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

methyl vinyl ketone
78-94-4

methyl vinyl ketone

(+/-)-7a-methyl-2,3,7,7a,tetrahydro-1H-indene-1,5(6H)-dione
19576-08-0

(+/-)-7a-methyl-2,3,7,7a,tetrahydro-1H-indene-1,5(6H)-dione

Conditions
ConditionsYield
With lipase from porcine pancreas In methanol; water Robinson Annulation; Green chemistry; Enzymatic reaction;95%
Stage #1: 2-Methylcyclopentane-1,3-dione; methyl vinyl ketone With aluminum oxide at 20℃; for 0.166667h; Michael addition;
Stage #2: With pyrrolidine for 0.05h; Robinson annulation; microwave irradiation;
45%
With pyridine; toluene; tert-butyl alcohol Erhitzen des Reaktionsprodukts mit Essigsaeure und Toluol-4-sulfonsaeure;
With triethylamine In ethyl acetate
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

4,10-bisthia-1,2,3,4,9,10-hexahydrophenanthrenylideneethylisothiuroniumacetate
78500-02-4

4,10-bisthia-1,2,3,4,9,10-hexahydrophenanthrenylideneethylisothiuroniumacetate

8,14-seco-1,6-dithiabenz<3,4>estra-3,5(10),9(11)-triene-14,17-dione
78500-03-5

8,14-seco-1,6-dithiabenz<3,4>estra-3,5(10),9(11)-triene-14,17-dione

Conditions
ConditionsYield
In diethyl ether; water Ambient temperature; two phase system;95%
In diethyl ether; water for 6h;95%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

2-(diethoxyphosphoryl)acrylic acid di(cyclohexylamine) salt

2-(diethoxyphosphoryl)acrylic acid di(cyclohexylamine) salt

2-(Diethoxy-phosphoryl)-3-(1-methyl-2,5-dioxo-cyclopentyl)-propionic acid; compound with dicyclohexyl-amine

2-(Diethoxy-phosphoryl)-3-(1-methyl-2,5-dioxo-cyclopentyl)-propionic acid; compound with dicyclohexyl-amine

Conditions
ConditionsYield
In benzene at 25℃; for 48h;95%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

trifluoromethylsulfonic anhydride
358-23-6

trifluoromethylsulfonic anhydride

trifluoromethanesulfonic acid 2-methyl-3-oxocyclopent-1-enyl ester
134050-29-6

trifluoromethanesulfonic acid 2-methyl-3-oxocyclopent-1-enyl ester

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine In dichloromethane at -78 - -40℃; for 1h;95%
With pyridine In dichloromethane at -78 - 20℃; Inert atmosphere;92%
Stage #1: 2-Methylcyclopentane-1,3-dione With N-ethyl-N,N-diisopropylamine In dichloromethane at -78℃; for 0.166667h; Sealed tube; Inert atmosphere;
Stage #2: trifluoromethylsulfonic anhydride In dichloromethane at -78℃; for 1h; Sealed tube; Inert atmosphere;
92%
With 2,6-dimethylpyridine In dichloromethane at -78 - 20℃; for 1.5h;
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

homoalylic alcohol
627-27-0

homoalylic alcohol

3-but-3-enyloxy-2-methyl-cyclopent-2-enone
1116036-47-5

3-but-3-enyloxy-2-methyl-cyclopent-2-enone

Conditions
ConditionsYield
With toluene-4-sulfonic acid In toluene for 12h; Reflux;95%
maleiimide
541-59-3

maleiimide

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

Isopropenyl acetate
108-22-5

Isopropenyl acetate

1,8-diacetoxy-9-methyl-4-azatricyclo[5.2.1.02,6]dec-8-ene-3,5-dione

1,8-diacetoxy-9-methyl-4-azatricyclo[5.2.1.02,6]dec-8-ene-3,5-dione

Conditions
ConditionsYield
With toluene-4-sulfonic acid for 14h; Diels-Alder Cycloaddition; Reflux;95%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

4-Nitrobenzenesulfonyl chloride
98-74-8

4-Nitrobenzenesulfonyl chloride

2-methyl-3-oxocyclopent-1-en-1-yl 4-nitrobenzenesulfonate

2-methyl-3-oxocyclopent-1-en-1-yl 4-nitrobenzenesulfonate

Conditions
ConditionsYield
With potassium carbonate In acetonitrile at 30℃; for 0.5h; Reagent/catalyst; Solvent; Temperature; Inert atmosphere;95%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

3-chloro-2-methylcyclopent-2-en-1-one
35173-23-0

3-chloro-2-methylcyclopent-2-en-1-one

Conditions
ConditionsYield
With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane 0 deg C, 5 min, then to room temp., 30 min;94%
With triethylamine; dichlorotriphenylphosphorane In benzene for 4h; Ambient temperature;92%
With lithium hydride; O-phenyl phosphorodichloridate; lithium chloride In tetrahydrofuran for 2h; Ambient temperature;83%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

Allyl acetate
591-87-7

Allyl acetate

2-allyl-2-methyl-1,3-cyclopentanedione
26828-48-8

2-allyl-2-methyl-1,3-cyclopentanedione

Conditions
ConditionsYield
With tetrakis(triphenylphosphine) palladium(0) In methanol Heating;94%
tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran at 25℃;94%
tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran for 72h;76%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

6-(2-benzyloxy-3-methoxyphenyl)-1-hexen-3-one
131943-93-6

6-(2-benzyloxy-3-methoxyphenyl)-1-hexen-3-one

(+/-)-2-<6-(2-benzyloxy-3-methoxyphenyl)-3-oxohexyl>-2-methylcyclopentane-1,3-dione
131943-94-7

(+/-)-2-<6-(2-benzyloxy-3-methoxyphenyl)-3-oxohexyl>-2-methylcyclopentane-1,3-dione

Conditions
ConditionsYield
With triethylamine In ethyl acetate for 36h; Ambient temperature;94%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

2-bromo-2-methylcyclopentane-1,3-dione
3883-60-1

2-bromo-2-methylcyclopentane-1,3-dione

Conditions
ConditionsYield
Stage #1: 2-Methylcyclopentane-1,3-dione With magnesium(II) perchlorate at 0 - 5℃; for 0.0833333h;
Stage #2: With N-bromosaccharin at 0 - 5℃;
94%
With bromine; triethylamine In ethyl acetate at 80℃; for 1h;
With methanol; tetraethylammonium bromide; Dess-Martin periodane In chloroform at 20℃; for 0.0833333h;
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

1,2-propanediene
463-49-0

1,2-propanediene

6-methoxy-3,4-dihydronaphthalene-1-yl triflate
115375-59-2

6-methoxy-3,4-dihydronaphthalene-1-yl triflate

A

2-<2-(6-methoxy-3,4-dihydronaphthalen-1-yl)prop-2-ene-1-yl>-2-methylcyclopentane-1,3-dione
57346-12-0

2-<2-(6-methoxy-3,4-dihydronaphthalen-1-yl)prop-2-ene-1-yl>-2-methylcyclopentane-1,3-dione

B

1-isopropenyl-6-methoxynaphthalene

1-isopropenyl-6-methoxynaphthalene

C

2-Methyl-2-(3-methyl-2-methylene-but-3-enyl)-cyclopentane-1,3-dione
183194-89-0

2-Methyl-2-(3-methyl-2-methylene-but-3-enyl)-cyclopentane-1,3-dione

Conditions
ConditionsYield
With sodium hydride; triphenylphosphine; lithium chloride; bis(dibenzylideneacetone)-palladium(0) In dimethyl sulfoxide at 65℃; for 76h;A 94%
B 5%
C 16%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

methyl iodide
74-88-4

methyl iodide

2,2-dimethylcyclopentane-1,3-dione
3883-58-7

2,2-dimethylcyclopentane-1,3-dione

Conditions
ConditionsYield
Stage #1: 2-Methylcyclopentane-1,3-dione; methyl iodide With potassium hydroxide In 1,4-dioxane; water Heating / reflux;
Stage #2: With hydrogenchloride In water at 120℃; for 0.25h;
93%
With potassium hydroxide In 1,4-dioxane; water at 20℃; Reflux;93%
With potassium hydroxide In 1,4-dioxane; water Reflux;68%
1,1-Diphenylethylene
530-48-3

1,1-Diphenylethylene

2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

A

benzophenone
119-61-9

benzophenone

B

1-hydroxy-6-methyl-4,4-diphenyl-2,3-dioxabicyclo<4.3.0>nonan-7-one
142605-75-2

1-hydroxy-6-methyl-4,4-diphenyl-2,3-dioxabicyclo<4.3.0>nonan-7-one

Conditions
ConditionsYield
With oxygen; manganese(II) acetate In acetic acid at 23℃; for 15h;A 5%
B 93%
2-Methylcyclopentane-1,3-dione
765-69-5

2-Methylcyclopentane-1,3-dione

3-Bromo-2-methylcyclopent-2-en-1-one
56671-87-5

3-Bromo-2-methylcyclopent-2-en-1-one

Conditions
ConditionsYield
With triethylamine; dibromotriphenylphosphorane In benzene for 4h; Ambient temperature;93%
With Oxalyl bromide; N,N-dimethyl-formamide In dichloromethane 0 deg C, 5 min, then to room temp., 30 min;88%
With Oxalyl bromide; N,N-dimethyl-formamide In dichloromethane at 0 - 20℃; for 4.25h; Inert atmosphere;83%

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