2-Pentene, 1-bromo-

Base Information

• Chemical Name: 2-Pentene, 1-bromo-
• CAS No.: 20599-27-3
• Molecular Formula: C5H9Br
• Molecular Weight: 149.03
• Hs Code.: 2903399090
• European Community (EC) Number: 625-896-6
• DSSTox Substance ID: DTXSID001032587
• Nikkaji Number: J97.477C,J1.662.950B
• Wikidata: Q76306584
• Mol file: 20599-27-3.mol

Synonyms:2-Pentene, 1-bromo-;7348-71-2;20599-27-3;(E)-1-bromopent-2-ene;1-Bromo-2-pentene, predominantly trans;1-BROMO-2-PENTENE;(E)-1-BROMO-2-PENTENE;(2E)-1-Bromopent-2-Ene;1-Bromo-2-pentene,predominantly trans;1-bromo-trans-2-pentene;1-bromopent-2-ene;E-1-Bromo-2-pentene;trans-1-bromo-pent-2-ene;(2E)-1-Bromo-2-pentene;SCHEMBL968386;SCHEMBL968388;FTBPZRNURKMEFD-ONEGZZNKSA-N;DTXSID001032587;AKOS015913654;EN300-99054;1-Bromo-2-pentene, predominantly trans, 95%;A848886

Chemical Property of 2-Pentene, 1-bromo-

Chemical Property:

• Vapor Pressure: 16mmHg at 25°C
• Melting Point: -106.7°C (estimate)
• Refractive Index: 1.4731
• Boiling Point: 123.5°Cat760mmHg
• Flash Point: 22.8°C
• PSA: 0.00000
• Density: 1.264g/cm³
• LogP: 2.34750
• XLogP3: 2.3
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 2
• Exact Mass: 147.98876
• Heavy Atom Count: 6
• Complexity: 39.2

Purity/Quality:

99% ^*data from raw suppliers

1-bromopent-2-ene ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: CCC=CCBr
• Isomeric SMILES: CC/C=C/CBr

Technology Process of 2-Pentene, 1-bromo-

There total 18 articles about 2-Pentene, 1-bromo- 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: 70.0%

(E)-2-penten-1-ol (1576-96-1) → 1-bromopent-2-ene (20599-27-3)

Guidance literature:

With pyridine; phosphorus tribromide; In Petroleum ether; for 2h;

Reference yield: 2.0%

1-cyclopropylethanol (765-42-4) → 1-bromopent-2-ene (20599-27-3) + 1-bromo-1-cyclopropylethane (80204-20-2)

Guidance literature:

With bromine; triphenylphosphine; In N,N-dimethyl-formamide; at -5 ℃;

Reference yield:

2-ethyl-2,3-dibromo-butyric acid (6335-72-4) → 1-bromopent-2-ene (20599-27-3) + 2-ethyl-2-butenoic acid (4411-99-8)

Guidance literature:

at 110 - 112 ℃; low-melting form;

upstream raw materials:

2-bromopent-1-ene

1-Penten-3-ol

(E)-2-penten-1-ol

1-cyclopropylethanol

Downstream raw materials:

(2-Ethyl-1-methoxy-but-3-enyl)-benzene

3,7-decadiene

3,4-diethyl-hexa-1,5-diene

3-ethyl-1,5-octadiene

Refernces

• 1、 Johnson, Chloe,Albrecht, Martin. "Z-Selective alkyne semi-hydrogenation catalysed by piano-stool N-heterocyclic carbene iron complexes". . p. 2779 - 2783. Retrieved 2018/06/14.
• 2、 Wenfang, Huang,Jun, Zhu,Wenjing, Xiao,Yanneng, Deng. "STADIES ON THE WITTIG REACTION (VIII). STEREOSELECTIVITY OF DIPHENYL ALLYLIC PHOSPHONIUM YLIDS IN WITTIG REACTION". . p. 99 - 104. Retrieved 2007/10/02.