(Z)-1,4-dibromobut-2-ene

Base Information

• Chemical Name: (Z)-1,4-dibromobut-2-ene
• CAS No.: 6974-12-5
• Molecular Formula: C4H6Br2
• Molecular Weight: 213.9
• NSC Number: 23187
• Nikkaji Number: J82.805J
• Mol file: 6974-12-5.mol

Synonyms:(Z)-1,4-dibromobut-2-ene;18866-73-4;cis-1,4-dibromo-2-butene;(2Z)-1,4-dibromo-2-butene;2-Butene,4-dibromo-;WLN: E2U2E;SCHEMBL483199;(Z)-1,4-Dibromo-2-butene;RMXLHIUHKIVPAB-UPHRSURJSA-N;NSC23187;NSC-23187;AKOS005216713;(2Z)-1,4-DIBROMOBUT-2-ENE;AS-12838

Chemical Property of (Z)-1,4-dibromobut-2-ene

Chemical Property:

• Appearance/Colour: white crystal
• Vapor Pressure: 0.405mmHg at 25°C
• Melting Point: 48-51 °C(lit.)
• Refractive Index: 1.542
• Boiling Point: 203 °C at 760 mmHg
• Flash Point: 71.9 °C
• PSA: 0.00000
• Density: 1.867 g/cm³
• LogP: 2.33240
• Storage Temp.: 0-6°C
• XLogP3: 2.1
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 2
• Exact Mass: 213.88158
• Heavy Atom Count: 6
• Complexity: 34.8

Purity/Quality:

99% ^*data from raw suppliers

1,4-Dibromobut-2-ene 99% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): T
• Hazard Codes: T
• Statements: 25-34
• Safety Statements: 26-36/37/39-45

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: C(C=CCBr)Br
• Isomeric SMILES: C(/C=C\CBr)Br

Technology Process of (Z)-1,4-dibromobut-2-ene

There total 27 articles about (Z)-1,4-dibromobut-2-ene 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: 85.0%

1,4-butenediol (6117-80-2) → 1,4-dibromo-2-butene (6974-12-5)

Guidance literature:

With phosphorus tribromide; In diethyl ether; at -20 - -5 ℃; for 2h;

DOI:10.1080/00397919108020841

Reference yield:

1,4-butenediol (821-11-4,6117-80-2,110-64-5) → 1,4-dibromo-2-butene (6974-12-5)

Guidance literature:

With phosphorus tribromide; In dichloromethane; at 0 - 20 ℃; for 3.5h; Inert atmosphere;

Reference yield:

buta-1,3-diene (106-99-0,130983-70-9,29406-96-0,9003-17-2) → 1,4-dibromo-2-butene (6974-12-5) + 3,4-dibromo-1-butene (10463-48-6)

Guidance literature:

With chloroform; bromine;

upstream raw materials:

3,4-butenediol

ethanol

3,4-dibromo-1-butene

ammonium thiocyanate

Downstream raw materials:

N,N'-diphenyl-but-2-enediyldiamine

2-phenyltetralin

N-<4-Brom-2-butenyl>-N-benzyl-N.N-dimethylammonium

(BrPh₃PCH₂)2C₂H₂

Refernces

• 1、 Schoeps, Dirk,Buhr, Kristian,Dijkstra, Marga,Ebert, Katrin,Plenio, Herbert. "Batchwise and continuous organophilic nanofiltration of Grubbs-type olefin metathesis catalysts". experimental part. p. 2960 - 2965. Retrieved 2009/12/08.
• 2、 Keegstra,Verkruijsse,Andringa,Brandsma. "Efficient procedures for 1-bromo-1,3-butadiene and 2-bromo-1,3-butadiene". . p. 721 - 726. Retrieved 2007/10/02.