1,2-Dibromopentane

Base Information

• Chemical Name: 1,2-Dibromopentane
• CAS No.: 3234-49-9
• Molecular Formula: C5H10Br2
• Molecular Weight: 229.942
• Hs Code.: 2903399090
• European Community (EC) Number: 221-782-1
• DSSTox Substance ID: DTXSID00871292
• Nikkaji Number: J80.667F
• Mol file: 3234-49-9.mol

Synonyms:1,2-DIBROMOPENTANE;3234-49-9;Pentane, 1,2-dibromo-;1,2-dibromo-pentane;EINECS 221-782-1;1,2 dibromopentane;Pentane,1,2-dibromo-;1,2-bis(bromanyl)pentane;SCHEMBL3803277;DTXSID00871292;AKOS015915035;FT-0634735;A821237;J-503808

Chemical Property of 1,2-Dibromopentane

Chemical Property:

• Melting Point: -28.63°C (estimate)
• Refractive Index: 1.5064
• Boiling Point: 184 °C at 760 mmHg
• Flash Point: 64.3 °C
• PSA: 0.00000
• Density: 1.669 g/cm³
• LogP: 2.94490
• XLogP3: 3.1
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 3
• Exact Mass: 229.91288
• Heavy Atom Count: 7
• Complexity: 37.1

Purity/Quality:

99%, ^*data from raw suppliers

1,2-DIBROMOPENTANE 95.00% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: CCCC(CBr)Br

Technology Process of 1,2-Dibromopentane

There total 13 articles about 1,2-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: 80.0%

1-penten (109-67-1) → 1,2-dibromopentane (3234-49-9)

Guidance literature:

With pyridinium hydrobromide perbromide; In dichloromethane; 1.) a) 0 deg C, 2 h, b) RT, 1 h;

DOI:10.1021/ja00173a002

Reference yield: 70.0%

1-penten (109-67-1) + ethane-1,2-dithiol (540-63-6) → 1,2-dibromopentane (3234-49-9) + 2-bromo-1-[2-(2-bromo-pentylsulfanyl)-ethylsulfanyl]-pentane

Guidance literature:

With N-Bromosuccinimide; In diethyl ether; at 20 ℃; for 0.5h;

DOI:10.1016/S0040-4039(03)01221-8

Reference yield:

pentane (109-66-0,8031-35-4,9078-70-0) → 1,2-dibromopentane (3234-49-9) + 2-bromopentane (107-81-3) + 3-bromopentane (1809-10-5) + 3,3-dibromopentane (54653-27-9) + erythro-2,3-dibromopentane + threo-2,3-dibromopentane

Guidance literature:

With 4C₁₆H₃₆N⁽¹⁺⁾*Br₂*V₁₂O₃₂^(4-); at 25 ℃; for 15h; Inert atmosphere;

DOI:10.1002/anie.202007406

upstream raw materials:

1-penten

1-Pentyne

1-chloropentane-2-one

Cyclopentane

Downstream raw materials:

pentane

3,3-dimethylpentane

2,2-dimethylpentane

1-Pentyne

Refernces

• 1、 Ruasse, Marie-Francoise,Zhang, Ben-Li. "Nucleophilic Contribution of the Solvent in Olefin Bromination. 1. Steric Inhibition to Nucleophilic Solvation in Alkene Bromination via Bromonium Ions". . p. 3207 - 3210. Retrieved 1984.
• 2、 Zakrzewski,Huras,Sas,Zelechowski,Bombinska. "Removal of water - a factor influencing the synthesis of alkynes in a phase-transfer catalyzed β-elimination reaction". . p. 1051 - 1057. Retrieved 2008/09/21.
• 3、 Romdhani Younes, Moufida,Moncef Chaabouni, Mohamed,Baklouti, Ahmed. "N-bromosuccinimide-dimercaptoethane cobromination of alkenes: Synthesis of β,β′-dibromodithioethers". . p. 5263 - 5265. Retrieved 2007/10/03.