1192-04-7

Basic information

• Product Name: 1-Bromo-1-cyclopentene
• Synonyms: 1-Bromo-1-cyclopentene;1-Bromocyclopent-1-ene;1-Bromocyclopentene ,98%;Cyclopentene, 1-bromo-
• CAS NO: 1192-04-7
• Molecular Formula: C₅H₇Br
• Molecular Weight: 147.02
• Product Categories: blocks;Bromides
• Mol File: 1192-04-7.mol
• Article Data: 10

Chemical Properties

• Boiling Point: 139.842°C at 760 mmHg
• Flash Point: 44.485°C
• Appearance: /
• Density: 1.558g/cm³
• Vapor Pressure: 7.862mmHg at 25°C
• Refractive Index: 1.558
• Storage Temp.: 2-8°C
• CAS DataBase Reference: 1-Bromo-1-cyclopentene(CAS DataBase Reference)
• NIST Chemistry Reference: 1-Bromo-1-cyclopentene(1192-04-7)
• EPA Substance Registry System: 1-Bromo-1-cyclopentene(1192-04-7)

Safety Data

• Hazard Codes: Xi
• Hazardous Substances Data: 1192-04-7(Hazardous Substances Data)

Usage

General Description

1-Bromo-1-cyclopentene, also known as bromocyclopentene, is a colorless to pale yellow liquid organic compound. It is a member of the class of compounds known as bromo-olefins and is used as a building block in organic synthesis for the preparation of various other organic compounds. It is primarily utilized as a reagent in chemical reactions, such as in the synthesis of pharmaceuticals and agrochemicals. 1-Bromo-1-cyclopentene is also used as an intermediate in the manufacturing of fragrances, flavors, and other fine chemicals. It is important to handle this compound with caution, as it is flammable and can be harmful if inhaled or if it comes into contact with the skin.

InChI:InChI=1/C5H7Br/c6-5-3-1-2-4-5/h3H,1-2,4H2

Upstream product

• 29778-05-0 1,1-dibromocyclopentane 
• 1560-11-8 cyclopent-1-enecarboxylic acid 
• 25662-28-6 1-(carboxymethoxy)cyclopentadiene 
• 28075-49-2 1-cyclopentenyl triflate 
• 183-32-4 spiro[1,3-benzodioxol-2,1'-cyclopentane] 
• 931-94-2 1,1-dimethoxycyclopentane 
• 120-92-3 cyclopentanone 
• 14376-82-0 trans-1-bromo-2-chlorocyclopentane 
• 10230-26-9 trans-1,2-dibromocyclopentane 
• 75415-78-0 1,2-dibromocyclopentene 
• 1905-06-2 1-(bromoethylene)cyclobutane 

Downstream Products

• 1560-11-8 cyclopent-1-enecarboxylic acid 
• 1177441-31-4 (S)-1-cyclopentenyl-3-phenoxypropan-2-ol 
• 850036-28-1 cyclopenten-1-ylboronic acid 
• 38868-18-7 (cyclopent-2-enyl)-diphenylphosphine oxide 
• 106662-14-0 2-(cyclopent-1-en-1-yl)benzaldehyde 
• 1265897-73-1 methyl 1-(4-methoxyphenyl)-1,4,5,6-tetrahydrocyclopenta[c]pyrazole-3-carboxylate 
• 1235294-94-6 1-cyclopentenyl-2-nitrocyclohex-1-ene 
• 1219366-77-4 C₁₆H₁₆O₃ 
• 83459-06-7 (R)-2-Amino-1-(1-phenyl-vinyl)-cyclopentanol 
• 83459-09-0 (1S,5S)-1-(1-Phenyl-vinyl)-6-oxa-bicyclo[3.1.0]hexane 
• 289487-10-1 1-[2-(N,N-Dimethylamino)phenylsulfinyl]cyclopentene 
• 34361-36-9 Anilid v.2-Nitrocyclopentanon 
• 886-66-8 1,4-diphenyl-1,3-butadiyne 

Relevant articles and documents

Preparation of cyclopentyl (f) ene-1-boronic acid frequency that ester method

The invention discloses a method of preparing cyclopenten/cyclohexen-1-yl-boronic acid pinacol ester from methyl 1-cyclopentene/cyclohexene-1-carboxylate by three-step continuous operations. The method includes subjecting the raw material to alkaline hydrolysis to form the corresponding 1-alkylene carboxylic acid; performing addition with bromine; performing elimination and decarboxylation at the same time under the existence of DBU or DMAP to produce 1-bromo cyclopentene/cyclohexene; and allowing the 1-bromo cyclopentene/cyclohexene and methoxyboronic acid pinacol ester to form an ester under the existence of magnesium metal by a one-pot process to obtain the cyclopenten/cyclohexen-1-yl-boronic acid pinacol ester. The method is high in continuity, simple and convenient in operations, free of low-temperature reactions, and capable of obtaining the 1-bromo cyclopentene/cyclohexene intermediate with high purity and meeting market demands. The method adopts one-pot-process of Grignard reaction/esterification, so that the method is more convenient in operations and has less by-products, and the product is easier in rectification purification.

Gold-catalysed alkenyl- and arylsilylation reactions forming 1-silaindenes

In the presence of gold(i)-phosphine catalysts, alkenyl- and arylsilanes undergo intramolecular cyclisation reactions onto appendant alkyne moieties to afford 1-silaindene derivatives. The reaction pathways vary depending on the substituent on silicon. The Royal Society of Chemistry 2011.