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;Cyclopentene-1-boronic acid;CYCLOPENTEN-1-YLBORONIC ACID;Cyclopent-1-ene-1-boronic acid;1-CYCLOPENTEN-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: $63
Updated: 2026/03/19

TCI Chemical

Product number: C2893
Product name: 1-Cyclopentenylboronic Acid (contains varying amounts of Anhydride)
Packaging: 5g
Price: $186
Updated: 2026/03/19

TRC

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

ChemScene

Product number: CS-W000981
Product name: (Cyclopent-1-en-1-yl)boronicacid
Purity: >97.0%
Packaging: 1g
Price: $20
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FC137349
Product name: Cyclopenten-1-ylboronic acid
Packaging: 250mg
Price: $62.5
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 -10C, 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: 44802
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: 9254
Advantage: 66

Accela ChemBio Co.,Ltd.

Tel: 021-50795510 4000665055
Fax: 021-50795055
Email: marketing@accelachem.com
Country: China
ProdList: 10977
Advantage: 64

Nanjing Chemlin Chemical Co., Ltd

Tel: 025-83697070 13770331960
Fax: +86-25-83453306
Email: info@chemlin.com.cn
Country: China
ProdList: 16027
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: 3999
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

Cyclopentene-1-boronic acid

850036-28-1

C5H9BO2

blocks

BoronicAcids