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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

cis-4-Cyclopentene-1,3-diol

Cas:29783-26-4

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

CIS-3,5-DIHYDROXY-1-CYCLOPENTENE CAS 29783-26-4

Cas:29783-26-4

Min.Order:1 Kilogram

FOB Price: $6.0 / 10.0

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

Pharmaceutical Grade CAS 29783-26-4 with competitive price

Cas:29783-26-4

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

Cis-3,5-dihydroxy-1-cyclopentene 29783-26-4

Cas:29783-26-4

Min.Order:1 Kilogram

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

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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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

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

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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 present

cis-Cyclopent-4-ene-1,3-diol

Cas:29783-26-4

Min.Order:1 Gram

FOB Price: $5256.0

Type:Trading Company

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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

Top Purity SupplierCis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

Min.Order:0

Negotiable

Type:Trading Company

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Zibo Dorne chemical technology co. LTD

Product Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

TAIZHOU ZHENYU BIOTECHNOLOGY CO., LTD

Zhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

Min.Order:1 Kilogram

FOB Price: $2.0

Type:Lab/Research institutions

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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

29783-26-4 CAS NO.29783-26-4

Cas:29783-26-4

Min.Order:1 Metric Ton

FOB Price: $7.0 / 8.0

Type:Trading Company

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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

29783-26-4

Cas:29783-26-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

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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

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

Hangzhou Dingyan Chem Co., Ltd

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

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

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

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Henan Tianfu Chemical Co., Ltd.

1.Our services:A.Supply sampleB.The packing also can be according the customers` requirmentC.Any inquiries will be replied within 24 hoursD.we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate.

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Xian Changyue Biological Technology Co., Ltd.

best seller Application:API

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Chemsigma International Co.,Ltd.

bulk productiongoods in stockswe have the best competitive price in the marketmeantime,we are committed to service to our every customer Chemsigma International Co.,Ltd. is a chemical manufacturer, specialize in custom synthesis and organic chemical

CIS-3,5-DIHYDROXY-1-CYCLOPENTENE

Cas:29783-26-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

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

1,we produce and sell good chemicals around the world.2,our success rate is about 95%. this means, if customer order is accepted, the probability that the customer will obtain the ordered substances, is 95%.3,our staff consists of highly qualified in

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

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

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

HANGZHOU TIANYE CHEMICALS CO., LTD.

We product this chemical more than 10 years . We are very experience to export it to many countries, Our superior & stable quality , competitive price gain warm reception from our customers. Application:intermediate

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

Min.Order:0

Negotiable

Type:Trading Company

inquiry

DB BIOTECH CO., LTD

best seller Application:API

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Changchun Artel lmport and Export trade company

Supply top quality products with a reasonable price Application:api

29783-26-4

Cas:29783-26-4

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Hangzhou Fandachem Co.,Ltd

CIS-3,5-DIHYDROXY-1-CYCLOPENTENEAppearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:pharmaceutical intermediate Transportation:by air, by sea, by express

CIS-3,5-DIHYDROXY-1-CYCLOPENTENE

Cas:29783-26-4

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

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Muhuang Technology Co., Ltd

best seller Application:API

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

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

Cis-3,5-dihydroxy-1-cyclopentene

Cas:29783-26-4

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

cis-4-Cyclopentene-1,3-diol

Cas:29783-26-4

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Jilin haofei import and export trade Co.,Ltd

Price, service, company and transport advantage: 1. Best service, place of origin China, high quality, and reasonable price. 2. It's customers' right to choose the package (EMS, DHL, FEDEX, UPS). 3. It's customers' right

29783-26-4 CAS NO.29783-26-4

Cas:29783-26-4

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Nanjing Zhiyan Pharmaceutical Technology Co. Ltd.

High quality / commercialize;Stable production capacity.Appearance:actual character Storage:Temperature controlled NMT 30℃ Package:As customer request Application:Used for Synthesis API and Research Transportation:Follow the MSDS

(1r,3s)-rel-cyclopent-4-ene-1,3-diol

Cas:29783-26-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

cyclopenta-1,3-diene
542-92-7

cyclopenta-1,3-diene

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
With oxygen; rose bengal; thiourea In methanol at 20℃; for 12h; Irradiation;100%
Stage #1: cyclopenta-1,3-diene With oxygen In dichloromethane at 20℃; for 3h; visible light irradiation;
Stage #2: With thiourea
95%
Stage #1: cyclopenta-1,3-diene With oxygen; tetrakis(pentafluorophenyl)porphyrin In methanol; carbon dioxide under 90009 Torr; Irradiation; Flow reactor; liquid CO2;
Stage #2: With thiourea In methanol; carbon dioxide at 0℃; under 90009 Torr; Flow reactor; liquid CO2;
94%
cis-1,4-diacetoxy-2-cyclopentene
54664-61-8

cis-1,4-diacetoxy-2-cyclopentene

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
With potassium carbonate In methanol at 0℃; for 4h;94%
With potassium carbonate In methanol for 2h; Heating;40 g
With sodium hydroxide In methanol; water Reflux;
With potassium carbonate In methanol at 0℃; for 4h;
cyclopentadiene endoperoxide
6573-26-8

cyclopentadiene endoperoxide

A

cis-1α,2α,4α,6α-3,7-dioxatricyclo<4.1.0.02,4>heptane
16326-26-4

cis-1α,2α,4α,6α-3,7-dioxatricyclo<4.1.0.02,4>heptane

B

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
With tris(triphenylphosphine)ruthenium(II) chloride In dichloromethane at -25℃; for 1h; Product distribution; ruthenium(II) catalyzed reaction of 1,4-endoperoxide;A 78%
B 3%
C 5%
With tris(triphenylphosphine)ruthenium(II) chloride In dichloromethane at -78 - -25℃; for 2.5h;A 71.8%
B 2.6%
C 3.5%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
With tetrabutyl ammonium fluoride; triethylamine In tetrahydrofuran for 3h; Ambient temperature;77%

A

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

trans-3,5-dihydroxycyclopent-1-ene
694-47-3

trans-3,5-dihydroxycyclopent-1-ene

Conditions
ConditionsYield
With methanol; sodium tetrahydroborate; cerium(III) chloride heptahydrate at -20℃; Overall yield = 95 %;A 71%
B n/a
(-)-2-cyclopenten-1(R),4(S)-diyl bis-N-mesyl-(S)-phenylalaninate
63603-17-8

(-)-2-cyclopenten-1(R),4(S)-diyl bis-N-mesyl-(S)-phenylalaninate

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
With barium dihydroxide In methanol; water for 4h; Ambient temperature;68%
maleic anhydride
930-60-9

maleic anhydride

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
With sodium tetrahydroborate; cerium(III) chloride In methanol58%
With methanol; sodium tetrahydroborate; cerium(III) chloride heptahydrate at 0℃; for 0.5h;
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
With sodium tetrahydroborate; cerium(III) chloride heptahydrate In methanol at -40 - 20℃; Sealed tube;55%
Multi-step reaction with 3 steps
1: 36 percent / DBU / CH2Cl2 / 72 h / Ambient temperature
2: LiAlH4, LiI / toluene; various solvent(s) / 1.) -20 deg C, 1 h, 2.) -20 deg C to 0 deg C, 0.5 h, 3.) 0 deg C to 15 deg C, 4 h
3: 58 mg / p-TsOH / ethanol / 8 h / 55 °C
View Scheme
Multi-step reaction with 3 steps
1: 72 percent / Et3N, DMAP / tetrahydrofuran / Ambient temperature
2: LiAlH4, LiI, TBSOH / toluene; various solvent(s) / 23 h / -30 - -25 °C
3: 77 percent / Et3N, TBAF / tetrahydrofuran / 3 h / Ambient temperature
View Scheme
With sodium tetrahydroborate; cerium(III) chloride heptahydrate In methanol at -70 - -60℃; for 2h;
Stage #1: 4-Hydroxycyclopent-2-enone With cerium(III) chloride heptahydrate In tetrahydrofuran; methanol at 7℃; for 0.5h; Inert atmosphere;
Stage #2: With sodium tetrahydroborate; water; sodium hydroxide In tetrahydrofuran; methanol at -33 - -20℃;
86 g
cyclopentadiene endoperoxide
6573-26-8

cyclopentadiene endoperoxide

A

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
tetrakis(triphenylphosphine) palladium(0) In dichloromethane at 4℃; for 20h; Mechanism;A 16%
B 54%
tetrakis(triphenylphosphine) palladium(0) In dichloromethane at 4℃; for 20h;A 16%
B 54%
(1R,4S)-4-hydroxy-2-cyclopentene-1-yl acetate
60410-16-4

(1R,4S)-4-hydroxy-2-cyclopentene-1-yl acetate

1-Nitropropane
108-03-2

1-Nitropropane

A

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

B

(+/-)-3-(1'-nitropropyl)cyclopentanone
344751-82-2

(+/-)-3-(1'-nitropropyl)cyclopentanone

Conditions
ConditionsYield
With tetrakis(triphenylphosphine) palladium(0); potassium tert-butylate; triphenylphosphine In tetrahydrofuran at 20℃; Inert atmosphere; Reflux; regioselective reaction;A 20%
B 40%
cyclopentadiene endoperoxide
6573-26-8

cyclopentadiene endoperoxide

thiourea
17356-08-0

thiourea

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

cyclopentadiene endoperoxide
6573-26-8

cyclopentadiene endoperoxide

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
With thiourea
With thiourea In dichloromethane; water
cis-3,5-dibromocyclopentene
17040-70-9

cis-3,5-dibromocyclopentene

tetraethylammonium acetate
1185-59-7

tetraethylammonium acetate

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
With acetone Kochen des gebildeten cis-3.5-Diacetoxy-cyclopentens-(1) in Aethanol mit methanol. Ba(OH)2-Loesung;
6-oxabicyclo[3.1.0]hex-2-ene
7129-41-1

6-oxabicyclo[3.1.0]hex-2-ene

A

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

(+/-)-trans-cyclopentene-(1)-diol-(3.4)
29782-81-8

(+/-)-trans-cyclopentene-(1)-diol-(3.4)

(+/-)-cis-Cyclopent-3-ene-1,2-diol
694-29-1

(+/-)-cis-Cyclopent-3-ene-1,2-diol

trans-3,5-dihydroxycyclopent-1-ene
694-47-3

trans-3,5-dihydroxycyclopent-1-ene

Conditions
ConditionsYield
With sodium perchlorate; water In acetone at 25℃; Rate constant; Mechanism; pH - rate profile;A n/a
B n/a
C 25 % Chromat.
D 42 % Chromat.
cyclopenta-1,3-diene
542-92-7

cyclopenta-1,3-diene

A

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

B

cis/trans-Cyclopent-3-en-1,2-diol
40459-97-0

cis/trans-Cyclopent-3-en-1,2-diol

trans-3,5-dihydroxycyclopent-1-ene
694-47-3

trans-3,5-dihydroxycyclopent-1-ene

Conditions
ConditionsYield
With peracetic acid; sodium acetate; sodium carbonate In dichloromethane; water; acetic acid for 1h; Ambient temperature;
cis-4-(trityloxy)cyclopent-2-enol

cis-4-(trityloxy)cyclopent-2-enol

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
With toluene-4-sulfonic acid In ethanol at 55℃; for 8h;58 mg
cis-3-acetoxy-5-hydroxycyclopent-1-ene
61740-26-9

cis-3-acetoxy-5-hydroxycyclopent-1-ene

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
With methanol; potassium carbonate In diethyl ether for 4h;
Stage #1: cis-3-acetoxy-5-hydroxycyclopent-1-ene With tert-butyl acetoacetate; potassium tert-butylate In tetrahydrofuran at 20℃; for 0.5h; Inert atmosphere;
Stage #2: With tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran at 20℃; for 1h; Reagent/catalyst;
cyclopenta-1,3-diene
542-92-7

cyclopenta-1,3-diene

tert-butyl alcohol
75-65-0

tert-butyl alcohol

1 mol H2O2

1 mol H2O2

OsO4

OsO4

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
at 0℃;
cyclopenta-1,3-diene
542-92-7

cyclopenta-1,3-diene

(AsCF3)4.5

(AsCF3)4.5

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: O2 / Nafilon-supported Pt(II) terpyridyl complex / D2O; CH2Cl2 / 20 °C / Irradiation
2: thiourea / H2O; CH2Cl2
View Scheme
(2-furyl)methyl alcohol
98-00-0

(2-furyl)methyl alcohol

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 53 percent / KH2PO4, H3PO4 / H2O / 40 h / 99 °C / pH 4.1
2: 36 percent / DBU / CH2Cl2 / 72 h / Ambient temperature
3: LiAlH4, LiI / toluene; various solvent(s) / 1.) -20 deg C, 1 h, 2.) -20 deg C to 0 deg C, 0.5 h, 3.) 0 deg C to 15 deg C, 4 h
4: 58 mg / p-TsOH / ethanol / 8 h / 55 °C
View Scheme
Multi-step reaction with 4 steps
1: 53 percent / KH2PO4, H3PO4 / H2O / 40 h / 99 °C / pH 4.1
2: 72 percent / Et3N, DMAP / tetrahydrofuran / Ambient temperature
3: LiAlH4, LiI, TBSOH / toluene; various solvent(s) / 23 h / -30 - -25 °C
4: 77 percent / Et3N, TBAF / tetrahydrofuran / 3 h / Ambient temperature
View Scheme
Multi-step reaction with 2 steps
1: potassium dihydrogenphosphate; phosphoric acid / water / 22 h / 25 - 99 °C / pH 4.1
2: sodium tetrahydroborate; cerium(III) chloride heptahydrate / methanol / 2 h / -70 - -60 °C
View Scheme
4-[(tert-butyldimethylsilyl)oxy]cyclopent-2-enone
61305-35-9, 61305-36-0, 61740-33-8, 56745-67-6

4-[(tert-butyldimethylsilyl)oxy]cyclopent-2-enone

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: LiAlH4, LiI, TBSOH / toluene; various solvent(s) / 23 h / -30 - -25 °C
2: 77 percent / Et3N, TBAF / tetrahydrofuran / 3 h / Ambient temperature
View Scheme
4-trityloxy-2-cyclopentenone
183612-95-5

4-trityloxy-2-cyclopentenone

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: LiAlH4, LiI / toluene; various solvent(s) / 1.) -20 deg C, 1 h, 2.) -20 deg C to 0 deg C, 0.5 h, 3.) 0 deg C to 15 deg C, 4 h
2: 58 mg / p-TsOH / ethanol / 8 h / 55 °C
View Scheme
cyclopenta-1,3-diene
542-92-7

cyclopenta-1,3-diene

hydroxylamine hydrochloride

hydroxylamine hydrochloride

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: oxygen; rose bengal / -100 °C / Unter Belichtung
2: thiourea
View Scheme
2,3-dioxabicyclo[2.2.1]hept-5-ene
6573-26-8

2,3-dioxabicyclo[2.2.1]hept-5-ene

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
With thiourea In methanol Inert atmosphere;
With thiourea In methanol; carbon dioxide Solvent; Flow reactor; liquid CO2;94 %Spectr.
cis-1,4-diacetoxy-2-cyclopentene
54664-61-8

cis-1,4-diacetoxy-2-cyclopentene

A

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

B

(1S,4R)-4-hydroxy-2-cyclopentenyl acetate
60176-77-4

(1S,4R)-4-hydroxy-2-cyclopentenyl acetate

C

(1R,4S)-4-hydroxy-2-cyclopentene-1-yl acetate
60410-16-4

(1R,4S)-4-hydroxy-2-cyclopentene-1-yl acetate

Conditions
ConditionsYield
With pseudomonas fluorescens lipase In hexane; water at 25℃; Reagent/catalyst; Enzymatic reaction; enantioselective reaction;
With lipase B from Candida antarctica In aq. phosphate buffer at 20℃; pH=7.5; Solvent; Enzymatic reaction;A n/a
B n/a
C n/a
bi(cyclopentadiene)
77-73-6, 933-60-8, 1755-01-7

bi(cyclopentadiene)

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 3 h / 200 - 300 °C
2: rose bengal; thiourea / methanol; isopropyl alcohol / -20 °C / Irradiation; Flow reactor
View Scheme
vinyl acetate
108-05-4

vinyl acetate

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

cis-1,4-diacetoxy-2-cyclopentene
54664-61-8

cis-1,4-diacetoxy-2-cyclopentene

Conditions
ConditionsYield
With lipase from candida antartica; triethylamine In tetrahydrofuran at 20℃; for 0.5h; Enzymatic reaction; enantioselective reaction;100%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

acetic anhydride
108-24-7

acetic anhydride

cis-1,4-diacetoxy-2-cyclopentene
54664-61-8

cis-1,4-diacetoxy-2-cyclopentene

Conditions
ConditionsYield
With triethylamine In dichloromethane Ambient temperature;97%
With triethylamine In dichloromethane for 3h;97%
With dmap In pyridine; dichloromethane 1.) 0 deg C,; 2.) room temperature 13 h;96.4%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

Tosyl isocyanate
4083-64-1

Tosyl isocyanate

3-tosyl-3,3a,6,6a-tetrahydro-2H-cyclopenta[d]oxazol-2-one
138604-23-6

3-tosyl-3,3a,6,6a-tetrahydro-2H-cyclopenta[d]oxazol-2-one

Conditions
ConditionsYield
C36H84O12P4Pd In tetrahydrofuran Heating;97%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

4-methoxybenzenediazonium tetrafluoroborate
459-64-3

4-methoxybenzenediazonium tetrafluoroborate

3-hydroxy-4-(4-methoxyphenyl)cyclopentanone

3-hydroxy-4-(4-methoxyphenyl)cyclopentanone

Conditions
ConditionsYield
With palladium(II) trifluoroacetate; 4,4-dimethyl-2-(quinolin-2-yl)-4,5-dihydrooxazole; zinc(II) carbonate In methanol at 40℃; Catalytic behavior; Reagent/catalyst; Temperature; Heck Reaction; Sealed tube; diastereoselective reaction;97%
aqueous NaCl

aqueous NaCl

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

sodium hydrogencarbonate
144-55-8

sodium hydrogencarbonate

cis-1,4-diacetoxy-2-cyclopentene
54664-61-8

cis-1,4-diacetoxy-2-cyclopentene

Conditions
ConditionsYield
With pyridine; hydrogenchloride; acetic anhydride In dichloromethane96.4%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

2-Methylpropionic anhydride
97-72-3

2-Methylpropionic anhydride

A

(1R,3S)-cyclopent-4-ene-1,3-diyl bis(isobutyrate)
161484-08-8

(1R,3S)-cyclopent-4-ene-1,3-diyl bis(isobutyrate)

B

(1R,4S)-(+)-4-hydroxycyclopent-2-enyl isobutyrate

(1R,4S)-(+)-4-hydroxycyclopent-2-enyl isobutyrate

Conditions
ConditionsYield
Stage #1: cis-4-cyclopentene-1,3-diol With (4-(pyridin-4-yl)-4,5-dihydro-3H-dinaphtho[2,1-c:1′,2′-e]azepine-2,6-diyl)bis(bis(4-((tertbutyldimethylsilyl)oxy)phenyl)methanol); N-ethyl-N,N-diisopropylamine In tert-butyl methyl ether at -40℃; for 0.25h;
Stage #2: 2-Methylpropionic anhydride In tert-butyl methyl ether at -40℃; for 8h; Reagent/catalyst; Temperature; Concentration; Time; enantioselective reaction;
A 4%
B 95%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

cis-cyclopentane-1,3-diol
16326-97-9

cis-cyclopentane-1,3-diol

Conditions
ConditionsYield
With potassium diazodicarboxylate; acetic acid In methanol at 0℃; Inert atmosphere;94%
With hydrogen; platinum(IV) oxide
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

4-hydroxybenzenediazonium tetrafluoroborate

4-hydroxybenzenediazonium tetrafluoroborate

3-hydroxy-4-(4-hydroxyphenyl)cyclopentanone

3-hydroxy-4-(4-hydroxyphenyl)cyclopentanone

Conditions
ConditionsYield
With palladium(II) trifluoroacetate; 4,4-dimethyl-2-(quinolin-2-yl)-4,5-dihydrooxazole; zinc(II) carbonate In methanol at 40℃; for 3h; Heck Reaction; Sealed tube; diastereoselective reaction;94%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

butyryl chloride
141-75-3

butyryl chloride

cis-Cyclopent-2-ene-1,4-diyl dibutanoate
95645-87-7

cis-Cyclopent-2-ene-1,4-diyl dibutanoate

Conditions
ConditionsYield
With triethylamine In dichloromethane for 3h; Ambient temperature;92%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

benzoyl chloride
98-88-4

benzoyl chloride

cis 2-cyclopentene 1,4-dibenzoate
4157-02-2

cis 2-cyclopentene 1,4-dibenzoate

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane at 0 - 20℃;92%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

p-chlorobenzenediazonium tetrafluoroborate
673-41-6

p-chlorobenzenediazonium tetrafluoroborate

3-hydroxy-4-(4-chlorophenyl)cyclopentanone

3-hydroxy-4-(4-chlorophenyl)cyclopentanone

Conditions
ConditionsYield
With palladium(II) trifluoroacetate; 4,4-dimethyl-2-(quinolin-2-yl)-4,5-dihydrooxazole; zinc(II) carbonate In methanol at 40℃; Catalytic behavior; Reagent/catalyst; Temperature; Heck Reaction; Sealed tube; diastereoselective reaction;92%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

tert-butyldimethylsilyl chloride
18162-48-6

tert-butyldimethylsilyl chloride

cis-1,4-Bis(t-Butyldimethylsilyl)cyclopent-2-ene-1,4-diol
61692-11-3

cis-1,4-Bis(t-Butyldimethylsilyl)cyclopent-2-ene-1,4-diol

Conditions
ConditionsYield
With pyridine; 1H-imidazole for 1.5h; Ambient temperature;90%
With dmap; triethylamine In dichloromethane for 1h; Yield given;
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

diethyl chlorophosphate
814-49-3

diethyl chlorophosphate

meso-4-cyclopentene-1,3-diyl bis(diethyl phosphate)
139107-60-1

meso-4-cyclopentene-1,3-diyl bis(diethyl phosphate)

Conditions
ConditionsYield
With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In tetrahydrofuran; hexane at -40 - 0℃;90%
Stage #1: cis-4-cyclopentene-1,3-diol With n-butyllithium In tetrahydrofuran; hexane at -40℃; for 0.25h;
Stage #2: diethyl chlorophosphate In tetrahydrofuran; hexane at -40 - 0℃;
90%
With pyridine; dmap at 0 - 20℃; for 10h; Inert atmosphere;60%
With pyridine; dmap at 25℃; for 1h; Inert atmosphere;
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

acetic anhydride
108-24-7

acetic anhydride

A

cis-1,4-diacetoxy-2-cyclopentene
54664-61-8

cis-1,4-diacetoxy-2-cyclopentene

B

(1R,4S)-4-hydroxy-2-cyclopentene-1-yl acetate
60410-16-4

(1R,4S)-4-hydroxy-2-cyclopentene-1-yl acetate

Conditions
ConditionsYield
Stage #1: cis-4-cyclopentene-1,3-diol With (4-(pyridin-4-yl)-4,5-dihydro-3H-dinaphtho[2,1-c:1′,2′-e]azepine-2,6-diyl)bis(bis(4-((tertbutyldimethylsilyl)oxy)phenyl)methanol); N-ethyl-N,N-diisopropylamine In tert-butyl methyl ether at -40℃; for 0.25h;
Stage #2: acetic anhydride In tert-butyl methyl ether at -40℃; for 6h; Temperature; Time; enantioselective reaction;
A n/a
B 89%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

isobutyryl chloride
79-30-1

isobutyryl chloride

(1R,3S)-cyclopent-4-ene-1,3-diyl bis(isobutyrate)
161484-08-8

(1R,3S)-cyclopent-4-ene-1,3-diyl bis(isobutyrate)

Conditions
ConditionsYield
With triethylamine In dichloromethane for 3h; Ambient temperature;87%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

bromoacetic acid
79-08-3

bromoacetic acid

((1S,4R)-4-Carboxymethoxy-cyclopent-2-enyloxy)-acetic acid
218292-26-3

((1S,4R)-4-Carboxymethoxy-cyclopent-2-enyloxy)-acetic acid

Conditions
ConditionsYield
With tetra-(n-butyl)ammonium iodide; sodium hydride In tetrahydrofuran at 60℃;86%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

2-methoxyphenyldiazonium tetrafluoroborate
492-95-5

2-methoxyphenyldiazonium tetrafluoroborate

3-hydroxy-4-(2-methoxyphenyl)cyclopentanone

3-hydroxy-4-(2-methoxyphenyl)cyclopentanone

Conditions
ConditionsYield
With palladium(II) trifluoroacetate; 4,4-dimethyl-2-(quinolin-2-yl)-4,5-dihydrooxazole; zinc(II) carbonate In methanol at 40℃; Heck Reaction; Sealed tube; diastereoselective reaction;86%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

2-hydroxybenzenediazonium tetrafluoroborate

2-hydroxybenzenediazonium tetrafluoroborate

3-hydroxy-4-(2-hydroxyphenyl)cyclopentanone

3-hydroxy-4-(2-hydroxyphenyl)cyclopentanone

Conditions
ConditionsYield
With palladium(II) trifluoroacetate; 4,4-dimethyl-2-(quinolin-2-yl)-4,5-dihydrooxazole; zinc(II) carbonate In methanol at 40℃; for 5h; Heck Reaction; Sealed tube; diastereoselective reaction;85%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

propionyl chloride
79-03-8

propionyl chloride

cis-Cyclopent-2-ene-1,4-diyl dipropanoate
95645-86-6

cis-Cyclopent-2-ene-1,4-diyl dipropanoate

Conditions
ConditionsYield
With triethylamine In dichloromethane for 3h; Ambient temperature;84%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

isopropyl chloroformate
108-23-6

isopropyl chloroformate

meso-cyclopent-4-ene-1,3-diyl diisopropyl dicarbonate
1215098-84-2

meso-cyclopent-4-ene-1,3-diyl diisopropyl dicarbonate

Conditions
ConditionsYield
With pyridine In dichloromethane at 0℃;84%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

chloroformic acid ethyl ester
541-41-3

chloroformic acid ethyl ester

cyclopent-4-ene-1,3-diyl diethyl dicarbonate
188637-54-9

cyclopent-4-ene-1,3-diyl diethyl dicarbonate

Conditions
ConditionsYield
With pyridine In diethyl ether Ambient temperature;81%
Stage #1: cis-4-cyclopentene-1,3-diol With pyridine In dichloromethane at 5℃; Inert atmosphere;
Stage #2: chloroformic acid ethyl ester In dichloromethane at 5 - 20℃; Inert atmosphere;
14 g
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

di-tert-butylsilyl bis(trifluoromethanesulfonate)
85272-31-7

di-tert-butylsilyl bis(trifluoromethanesulfonate)

cis-3,5-cyclopent-1-ene

cis-3,5-cyclopent-1-ene

Conditions
ConditionsYield
With 2,6-dimethylpyridine In dichloromethane 0 deg C, 10 min; without cooling, 30 min;80%
di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

carbonic acid 4-tert-butoxycarbonyloxy-cyclopent-2-enyl ester tert-butyl ester
890122-43-7

carbonic acid 4-tert-butoxycarbonyloxy-cyclopent-2-enyl ester tert-butyl ester

Conditions
ConditionsYield
With sodium hydroxide; tetra(n-butyl)ammonium hydrogensulfate In water at 0 - 20℃; for 24h;80%
With tetra(n-butyl)ammonium hydrogensulfate; sodium hydroxide In dichloromethane; water at 0 - 20℃;80%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

4-bromobenzenediazonium tetrafluoroborate
673-40-5

4-bromobenzenediazonium tetrafluoroborate

3-hydroxy-4-(4-bromophenyl)cyclopentanone

3-hydroxy-4-(4-bromophenyl)cyclopentanone

Conditions
ConditionsYield
With palladium(II) trifluoroacetate; 4,4-dimethyl-2-(quinolin-2-yl)-4,5-dihydrooxazole; zinc(II) carbonate In methanol at 40℃; for 0.5h; Heck Reaction; Sealed tube; diastereoselective reaction;79%
vinyl acetate
108-05-4

vinyl acetate

cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

A

cis-1,4-diacetoxy-2-cyclopentene
54664-61-8

cis-1,4-diacetoxy-2-cyclopentene

B

(1S,4R)-4-hydroxy-2-cyclopentenyl acetate
60176-77-4

(1S,4R)-4-hydroxy-2-cyclopentenyl acetate

Conditions
ConditionsYield
With triethylamine In tetrahydrofuran for 4h; Ambient temperature; lipase from Mucor sp.;A 10%
B 78%
With Chirazyme In acetic acid butyl ester for 12h;A 72%
B 22%
With triethylamine In tetrahydrofuran for 2.5h; Ambient temperature; pancreatin;A 32%
B 65%
cis-4-cyclopentene-1,3-diol
29783-26-4

cis-4-cyclopentene-1,3-diol

(R)-(+)-4-hydroxy-2-cyclopentenone
59995-47-0

(R)-(+)-4-hydroxy-2-cyclopentenone

Conditions
ConditionsYield
With catalase from Micrococcus lysodeikticus; oxygen; NADP; calcium chloride In aq. phosphate buffer at 30℃; for 24h; pH=7.0; Reagent/catalyst; Enzymatic reaction;77%
Multi-step reaction with 5 steps
1: pyridine / Ambient temperature
2: TsOH / tetrahydrofuran; CH2Cl2 / Ambient temperature
3: NaOH / tetrahydrofuran; H2O / 5 h / Ambient temperature
4: 80 percent / Jones reagent / acetone / 0.5 h
5: 77 percent / aq.acetic acid / 15 h / Ambient temperature
View Scheme

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