CYCLOPENTEN-1-YLBORONIC ACID

Product Name: CYCLOPENTEN-1-YLBORONIC ACID
CAS No.: 850036-28-1
Chemical Name: CYCLOPENTEN-1-YLBORONIC ACID
Synonyms: openten-1-yL;1-Boronocyclopent-1-ene;Cyclopenten-1-ylboronic;Cyclopentenylboronic acid;1-Cyclopenteneboronic Acid;1-Cyclopentenylboronic acid;CYCLOPENTEN-1-YLBORONIC ACID;Cyclopent-1-ene-1-boronic acid;1-CYCLOPENTEN-1-YLBORONIC ACID;Cyclopent-1-en-1-ylboronic acid
CBNumber: CB7230602
Molecular Formula: C5H9BO2
Formula Weight: 111.93
MOL File: 850036-28-1.mol

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CYCLOPENTEN-1-YLBORONIC ACID Property

Melting point:: 134-140°C
Boiling point:: 246.7±33.0 °C(Predicted)
Density: 1.08±0.1 g/cm3(Predicted)
storage temp.: Inert atmosphere,Store in freezer, under -20°C
pka: 9.44±0.20(Predicted)
form: solid
color: white to pale yellow
InChI: 1S/C5H9BO2/c7-6(8)5-3-1-2-4-5/h3,7-8H,1-2,4H2
InChIKey: UZBHNSVUMGIKLU-UHFFFAOYSA-N
SMILES: OB(O)C1=CCCC1

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Safety

Hazard Codes: Xi
Risk Statements: 36/37/38-41-37/38
Safety Statements: 26-36/37/39-39
WGK Germany: WGK 3
Hazard Note: Harmful/Irritant/Keep Cold
TSCA: No
HS Code: 29319090
Storage Class: 11 - Combustible Solids
Hazard Classifications: Acute Tox. 4 Dermal
Acute Tox. 4 Inhalation
Acute Tox. 4 Oral
Eye Dam. 1
Skin Irrit. 2
STOT SE 3

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

TCI Chemical

Product number: C2893
Product name: 1-Cyclopentenylboronic Acid (contains varying amounts of Anhydride)
Packaging: 1g
Price: $74
Updated: 2025/07/31

TCI Chemical

Product number: C2893
Product name: 1-Cyclopentenylboronic Acid (contains varying amounts of Anhydride)
Packaging: 5g
Price: $219
Updated: 2025/07/31

TRC

Product number: C991468
Product name: Cyclopenten-1-ylboronicacid
Packaging: 5g
Price: $1100
Updated: 2021/12/16

SynQuest Laboratories

Product number: 6460-1-X1
Product name: Cyclopent-1-ene-1-boronic acid
Packaging: 25g
Price: $373
Updated: 2021/12/16

Medical Isotopes, Inc.

Product number: 34973
Product name: Cyclopent-1-en-1-ylboronicacid
Purity: 97%
Packaging: 1g
Price: $400
Updated: 2021/12/16

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CYCLOPENTEN-1-YLBORONIC ACID Chemical Properties,Usage,Production

Chemical Properties

Off-white powder

Uses

suzuki reaction

Synthesis

Cyclopenten-1-ylboronic acid is prepared as follows:

The first step of the raw material 1-chlorocyclopentene preparation: to a 2L four-necked bottle equipped with magnetic stirring, thermometer, condenser tube and exhaust gas alkali absorption device, add 374.2 (1.818mol, 1.05) phosphorus pentachloride, 863g of n-heptane, warming to 70 ??, drop 151.4g (1.803mol, 1eq) cyclopentanone, about 2 hours after the drop, and continue the reaction Half an hour, after cooling down to 0 ??, dropwise addition of 6 mol / L sodium hydroxide solution 0.69 kg, stirring for one hour, separation of the upper organic layer, the organic layer was washed once with saturated sodium bicarbonate, to obtain 1-chlorocyclopentene n-hexane solution 799 g, the internal standard yield of 81.1%;

The second step of preparation of cyclopenten-1-ylboronic acid: to a 5L four-necked flask equipped with mechanical stirring, thermometer, argon protection and reflux condenser tube was added T2215.5g (1.608mol, 1.1eq), lithium metal 22.6g (3.216mol, 2.2eq), tetrahydrofuran 678g, cooled down to -10??C, and dropwise addition of 1-chlorocyclopentene's Heptane solution (1eq), titration is completed insulation -10 ?? stirring 11 hours, GC control, the end of the reaction, add 1.3kg6N hydrochloric acid adjust PH = 2 ~ 3, stratification, the aqueous layer and then 400g of ethyl acetate extracted once, combined with the organic layer, 40 ?? distillation under reduced pressure, to not flow, precipitation of solids, add 200g of n-heptane-10 ?? pulp, filtration, drying to obtain the white solid cyclopentene -1-ylboronic acid 89.3g, yield 54.5%.

CYCLOPENTEN-1-YLBORONIC ACID Preparation Products And Raw materials

Raw materials

Preparation Products

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CYCLOPENTEN-1-YLBORONIC ACID Suppliers

Americas 1 China 145 Europe 1 Germany 1 India 3 Japan 1 Russia 1 United Kingdom 3 United States 12 Global 168

future industrial shanghai co., ltd

Tel: 400-0066400 13621662912
Fax: 021-55660885
Email: sales@jonln.com
Country: China
ProdList: 1995
Advantage: 65

Alfa Aesar

Tel: 400-6106006
Fax: 021-67582001/03/05
Email: saleschina@alfa-asia.com
Country: China
ProdList: 30123
Advantage: 84

TCI (Shanghai) Development Co., Ltd.

Tel: 021-67121386
Fax: 021-67121385
Email: Sales-CN@TCIchemicals.com
Country: China
ProdList: 24529
Advantage: 81

Energy Chemical

Tel: 021-021-58432009 400-005-6266
Fax: 021-58436166
Email: sales8178@energy-chemical.com
Country: China
ProdList: 44801
Advantage: 61

Wuhan Chemwish Technology Co., Ltd

Tel: 86-027-67849912
Fax: 86-027-87531808
Email: sales@chemwish.com
Country: China
ProdList: 35896
Advantage: 56

Jia Xing Isenchem Co.,Ltd

Tel: 0573-85285100 18627885956
Fax: 0573-85285100
Email: isenchem@163.com
Country: China
ProdList: 9309
Advantage: 66

Accela ChemBio Co.,Ltd.

Tel: 021-50795510 4000665055
Fax: 021-50795055
Email: sales@accelachem.com
Country: China
ProdList: 11032
Advantage: 64

Nanjing Chemlin Chemical Co., Ltd

Tel: 025-83697070 13913916777;
Fax: +86-25-83453306
Email: info@chemlin.com.cn
Country: China
ProdList: 15778
Advantage: 64

Shanghai Hanhong Scientific Co.,Ltd.

Tel: 021-54306202 13764082696
Email: info@hanhongsci.com
Country: China
ProdList: 42934
Advantage: 64

Shanghai Sphchem Co., Ltd.

Tel: 021-56491756 13512199871
Email: 2819742715@qq.com
Country: China
ProdList: 3997
Advantage: 55

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View Lastest Price from CYCLOPENTEN-1-YLBORONIC ACID manufacturers

ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD

Product: 1-Cyclopentenylboronic acid 850036-28-1
Price: US $3.00-9.00/KG
Min. Order: 0.1KG
Purity: 99%
Supply Ability: g-kg-tons, free sample is available
Release date: 2025-07-02

Zhuozhou Wenxi import and Export Co., Ltd

Product: CYCLOPENTEN-1-YLBORONIC ACID 850036-28-1
Price: US $15.00-10.00/KG
Min. Order: 1KG
Purity: 99%+ HPLC
Supply Ability: Monthly supply of 1 ton
Release date: 2021-07-11

Zhuozhou Wenxi import and Export Co., Ltd

Product: CYCLOPENTEN-1-YLBORONIC ACID 850036-28-1
Price: US $15.00-10.00/KG
Min. Order: 1KG
Purity: 99%+ HPLC
Supply Ability: Monthly supply of 1 ton
Release date: 2021-07-09

850036-28-1, CYCLOPENTEN-1-YLBORONIC ACIDRelated Search:

CYCLOHEXYLHYDRAZINE HYDROCHLORIDE Cyclopropylboronic acid Thiobenzoic acid TRIPHENYL BORATE 2-Aminoethoxydiphenyl borate 1-Octylboronic acid Cyclopentene 2-BORONO-2-CYCLOPENTENONE (1S)-1,7,7-TRIMETHYLBICYCLO[2.2.1]HEPT-2-EN-2-YLBORONIC ACID 2-NORBORNEN-2-YLBORONIC ACID 2-CYCLOPENTENYL-4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLANE CYCLOPENTEN-1-YLBORONIC ACID

1-Cyclopentenylboronic Acid (contains varying amounts of Anhydride)

Cyclopentenylboronic acid

1-CYCLOPENTEN-1-YLBORONIC ACID

Cyclopent-1-ene-1-boronic acid

CYCLOPENTEN-1-YLBORONIC ACID

Cyclopentene-1-boronic acid, 97%

Cyclopent-1-en-1-ylboronic acid

1-Cyclopentenylboronic acid

1-Boronocyclopent-1-ene

Boronic acid,B-1-cyclopenten-1-yl-

1-Cyclopentenylboronic acid 1-Cyclopenten-1-ylboronic acid

openten-1-yL

1-Cyclopenteneboronic Acid

850036-28-1 CYCLOPENTEN-1-YLBORONIC ACID

Cyclopenten-1-ylboronic

850036-28-1

C5H9BO2

blocks

BoronicAcids