4-Bromo-1-pentene

Base Information

• Chemical Name: 4-Bromo-1-pentene
• CAS No.: 31950-56-8
• Molecular Formula: C5H9 Br
• Molecular Weight: 149.03
• Hs Code.: 2903399090
• Mol file: 31950-56-8.mol

Synonyms:4-Bromo-1-pentene

Chemical Property of 4-Bromo-1-pentene

Chemical Property:

• Vapor Pressure: 20.1mmHg at 25°C
• Melting Point: -106.7°C (estimate)
• Refractive Index: 1.4500
• Boiling Point: 118.2°Cat760mmHg
• Flash Point: 25.9°C
• PSA: 0.00000
• Density: 1.244g/cm³
• LogP: 2.34590

Purity/Quality:

4-Bromo-1-pentene ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 4-Bromo-1-pentene

There total 5 articles about 4-Bromo-1-pentene which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 49.0%

Pent-4-en-2-ol (111957-98-3,625-31-0) → 4-bromopent-1-ene (31950-56-8)

Guidance literature:

With pyridine; phosphorus tribromide;

DOI:10.1007/BF00809147

Reference yield:

acetaldehyde (75-07-0,9002-91-9) + allylmagnesium bromide (1730-25-2) → 4-bromopent-1-ene (31950-56-8)

Guidance literature:

Multistep reaction; (i) , (ii) PBr₃, Et₂O;

DOI:10.1021/ja00864a021

Reference yield:

phosphoric acid tris-(1-methyl-but-3-enyl ester) (131108-20-8) → 4-bromopent-1-ene (31950-56-8)

Guidance literature:

With diethyl ether; bromine;

upstream raw materials:

phosphoric acid tris-(1-methyl-but-3-enyl ester)

Pent-4-en-2-ol

2-methylcyclopropanemethanol

acetaldehyde

Downstream raw materials:

but-3-en-1-yltriphenylphosphonium bromide

1-amino>-1-methyl-3-butene

hydrogen bromide

[(4-benzyloxy-benzenesulfonyl)-pent-4-enyl-amino]-acetic acid tert-butyl ester

Refernces

• 1、 Muenstedt, Rainer,Wannagat, Ulrich. "Sila-Substituted Perfumes and Isosteric Compounds of Perfumes. X. A Novel Route to Sila-β-Ionone". . p. 693 - 700. Retrieved 2007/10/02.