5-[Bis(2-hydroxyethyl)amino]-1-methyl-1H-benzimidazole-2-butanoic acid ethyl ester

Base Information

• Chemical Name: 5-[Bis(2-hydroxyethyl)amino]-1-methyl-1H-benzimidazole-2-butanoic acid ethyl ester
• CAS No.: 3543-74-6
• Molecular Formula: C18H27N3O4
• Molecular Weight: 349.43
• Hs Code.: 2933998350
• Mol file: 3543-74-6.mol

Synonyms:2-Benzimidazolebutyricacid, 5-[bis(2-hydroxyethyl)amino]-1-methyl-, ethyl ester (7CI,8CI);4-[5-[Bis(2-hydroxyethyl)amino]-1-methylbenzimidazol-2-yl]butanoic acid ethylester;

Chemical Property of 5-[Bis(2-hydroxyethyl)amino]-1-methyl-1H-benzimidazole-2-butanoic acid ethyl ester

Chemical Property:

• Melting Point: 98-101°C
• Boiling Point: 580.6 °C at 760 mmHg
• PKA: 14.26±0.10(Predicted)
• Flash Point: 305 °C
• PSA: 87.82000
• Density: 1.21 g/cm³
• LogP: 1.25010
• Storage Temp.: -20°C Freezer, Under Inert Atmosphere
• Solubility.: Chloroform (Slightly), Methanol (Slightly)

Purity/Quality:

99% ^*data from raw suppliers

[1-Methyl-5-bis(2’-hydroxyethyl)aminobenzimidazolyl-2]butanoicAcidEthylEster ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Uses: [1-Methyl-5-bis(2’-hydroxyethyl)aminobenzimidazolyl-2]butanoic Acid Ethyl Ester_x000D_Bendamustine Related Impurity 1 (cas# 3543-74-6) is a compound useful in organic synthesis.

Technology Process of 5-[Bis(2-hydroxyethyl)amino]-1-methyl-1H-benzimidazole-2-butanoic acid ethyl ester

There total 16 articles about 5-[Bis(2-hydroxyethyl)amino]-1-methyl-1H-benzimidazole-2-butanoic acid ethyl ester 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: 78.53%

oxirane (75-21-8,99932-75-9) + ethyl 4‐(5‐amino‐1‐methyl‐1H‐benzo[d]imidazol‐2‐yl)butanoate (3543-73-5) → 4-{5-[bis-(2-hydroxyl-ethyl)-amino]-1-methyl-1H-benzoimidazol-2yl}-butyric acid ethyl ester (3543-74-6)

Guidance literature:

oxirane; ethyl 4‐(5‐amino‐1‐methyl‐1H‐benzo[d]imidazol‐2‐yl)butanoate; With sodium acetate trihydrate; In water; acetic acid; at 0 - 25 ℃; for 23h;

With potassium carbonate; In dichloromethane; at 20 - 25 ℃;

Reference yield: 78.53%

oxirene (157-18-6) + ethyl 4‐(5‐amino‐1‐methyl‐1H‐benzo[d]imidazol‐2‐yl)butanoate (3543-73-5) → 4-{5-[bis-(2-hydroxyl-ethyl)-amino]-1-methyl-1H-benzoimidazol-2yl}-butyric acid ethyl ester (3543-74-6)

Guidance literature:

With sodium acetate; acetic acid; In water; at 0 - 25 ℃; for 23h; Concentration; Temperature; Time; Reagent/catalyst; Solvent;

Reference yield: 56.3%

ethyl 4‐(5‐amino‐1‐methyl‐1H‐benzo[d]imidazol‐2‐yl)butanoate (3543-73-5) + 2-bromoethanol (540-51-2) → 4-{5-[bis-(2-hydroxyl-ethyl)-amino]-1-methyl-1H-benzoimidazol-2yl}-butyric acid ethyl ester (3543-74-6)

Guidance literature:

With calcium carbonate; In acetonitrile; at 80 - 90 ℃;

upstream raw materials:

ethyl 4‐(5‐amino‐1‐methyl‐1H‐benzo[d]imidazol‐2‐yl)butanoate

2-chloro-ethanol

4‐(1‐methyl‐5‐nitro‐1H‐benzoimidazol‐2‐yl)butyric acid ethyl ester

oxirane

Downstream raw materials:

bendamustine

bendamustine hydrochloride

Refernces

• 1、 -. "Process for preparation of Bendamustine". . . Retrieved 2014/02/15.
• 2、 -. "PROCESS FOR THE PREPARATION OF BENDAMUSTINE". Paragraph 0107; 0108. . Retrieved 2014/02/16.