2,3-DIBROMOPENTANE

Base Information

• Chemical Name: 2,3-DIBROMOPENTANE
• CAS No.: 5780-13-2
• Molecular Formula: C4H8 Br2
• Molecular Weight: 215.916
• European Community (EC) Number: 628-297-8
• Nikkaji Number: J81.092D
• Mol file: 5780-13-2.mol

Synonyms:Butane,2,3-dibromo-, (R*,S*)-; Butane, 2,3-dibromo-, meso- (8CI); NSC 115796;erythro-2,3-Dibromobutane; meso-2,3-Dibromobutane

Chemical Property of 2,3-DIBROMOPENTANE

Chemical Property:

• Vapor Pressure: 3.02mmHg at 25°C
• Melting Point: -34.5°C
• Refractive Index: n20/D 1.508(lit.)
• Boiling Point: 161°Cat760mmHg
• Flash Point: 33°C
• PSA: 0.00000
• Density: 1.774g/cm³
• LogP: 2.55320
• XLogP3: 2.6
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 1
• Exact Mass: 215.89723
• Heavy Atom Count: 6
• Complexity: 30.5

Purity/Quality:

98%,99%, ^*data from raw suppliers

meso-2,3-Dibromobutane 98% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi
• Statements: 36/37/38-36
• Safety Statements: 26-36-37/39

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Canonical SMILES: CC(C(C)Br)Br
• Isomeric SMILES: C[C@H]([C@H](C)Br)Br
• Uses: meso-2,3-Dibromobutane is suitable for use in the synthesis of haloalcohol catalyzed by haloalkane dehalogenases.

Technology Process of 2,3-DIBROMOPENTANE

There total 45 articles about 2,3-DIBROMOPENTANE 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: 98.0%

erythro-2-bromo-3-chlorobutane (19246-45-8,19246-46-9,19773-36-5,19773-37-6,19773-43-4,49623-64-5,49623-65-6,49623-66-7) → DL-2,3-dibromobutane (598-71-0,5408-86-6,5780-13-2,40205-58-1,49623-63-4,58560-19-3)

Guidance literature:

With hydrogen bromide; ferric(III) bromide; In dichloromethane; at 25 ℃; for 1h;

DOI:10.1039/c39870001013

Reference yield: 90.0%

racemic 2,3-dichlorobutane (2211-67-8) → DL-2,3-dibromobutane (598-71-0,5408-86-6,5780-13-2,40205-58-1,49623-63-4,58560-19-3)

Guidance literature:

With hydrogen bromide; ferric(III) bromide; In dichloromethane; at 25 ℃; for 4h;

DOI:10.1039/c39870001013

Reference yield: 67.7%

(Z)-2-Butene (590-18-1) → (E/Z)-crotyl bromide (4784-77-4,29576-14-5,39616-19-8) + 3-bromo-1-butene (22037-73-6) + 2,3-dibromobutane (5408-86-6) + meso-2,3-dibromo-butane (5780-13-2)

Guidance literature:

With bromine; for 0.133333h; under 0.5 - 10 Torr; Product distribution; Ambient temperature; Irradiation;

upstream raw materials:

meso 2,3-butanediol diacetate

(Z)-2-Butene

trans-2-Butene

threo-2-bromo-3-chlorobutane

Downstream raw materials:

(E)-2-bromobut-2-ene

2,3-diacetoxybutane

(Z)-2-Butene

trans-2-Butene

Refernces

• 1、 Yoon, K. B.,Kochi, J. K.. "Efficient Conversion of Alkyl Chlorides into Bromides". . p. 1013 - 1014. Retrieved 2007/10/02.
• 2、 Tanner, Dennis D.,Ruo, Tomoki C. S.,Kosugi, Yoshio,Potter, Alan. "A reinvestigation of the vapor phase bromination of 2-bromobutane". . p. 2310 - 2316. Retrieved 2007/10/02.