Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI)

Base Information

• Chemical Name: Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI)
• CAS No.: 2941-48-2
• Molecular Formula: C7H3Cl2NS
• Molecular Weight: 204.08
• Hs Code.: 29342000
• Mol file: 2941-48-2.mol

Synonyms:2,5-Dichloro-1,3-benzothiazole;2,5-Dichlorobenzothiazole;

Chemical Property of Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI)

Chemical Property:

• Vapor Pressure: 0.004mmHg at 25°C
• Melting Point: 64-66℃
• Refractive Index: 1.701
• Boiling Point: 286.775 °C at 760 mmHg
• Flash Point: 127.237 °C
• PSA: 41.13000
• Density: 1.568 g/cm³
• LogP: 3.60310
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C

Purity/Quality:

99%, ^*data from raw suppliers

2,5-Dichlorobenzothiazole ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI)

There total 14 articles about Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI) 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: 95.0%

5-chloro-2-mercaptobenzothiazole (5331-91-9) → 2,5-Dichloro-benzothiazole (2941-48-2)

Guidance literature:

With sulfuryl dichloride; In (2S)-N-methyl-1-phenylpropan-2-amine hydrate; at 0 ℃; for 1.25h;

Reference yield: 79.0%

(4-chloro-2-isocyanophenyl)(methyl)sulfane → 2,5-Dichloro-benzothiazole (2941-48-2)

Guidance literature:

With tetra-(n-butyl)ammonium iodide; 1,2-dichloro-ethane; In tetrahydrofuran; at 120 ℃; for 3.5h;

DOI:10.1021/acs.joc.1c02747

Reference yield:

(5-chloro-1,3-benzothiazol-2-yl)hydrazine (20174-72-5) → 2,5-Dichloro-benzothiazole (2941-48-2)

Guidance literature:

With thionyl chloride; at 50 ℃; for 2h;

DOI:10.1016/j.bmcl.2012.03.079

upstream raw materials:

5-chloro-1,3-benzothiazole-2(3H)-thione

carbon disulfide

2,5-dichloronitrobenzene

5-chloro-2-mercaptobenzothiazole

Downstream raw materials:

5-chloro-N-phenylbenzo[d]thiazol-2-amine

5-chloro-N,N-dimethylbenzo[d]thiazol-2-amine

(5-chloro-benzothiazol-2-yl)-nitroso-phenyl-amine

Refernces

• 1、 Wimmer, Laurin,Parmentier, Michael,Riss, Bernard,Kapferer, Tobias,Ye, Chao,Li, Lei,Kim, Hongyong,Li, Jialiang. "Water-Promoted Chlorination of 2-Mercaptobenzothiazoles". . p. 2027 - 2032. Retrieved 2018/04/16.
• 2、 Ouyang, Liang,Huang, Yuhui,Zhao, Yuwei,He, Gu,Xie, Yongmei,Liu, Jie,He, Jun,Liu, Bo,Wei, Yuquan. "Preparation, antibacterial evaluation and preliminary structure-activity relationship (SAR) study of benzothiazol- and benzoxazol-2-amine derivatives". . p. 3044 - 3049. Retrieved 2012/06/04.