Cyclocondensation of o-phenylenediamines with α-ketothioesters: a novel approach for the synthesis of 2-acylbenzimidazoles.

Autor: Kavya, Kumar, Honnabandar, Kanaka Vijayashankar, Sridhar, Bilagumba T., Swaroop, Toreshettahally R., Shivakumar, Anantharaman, Mantelingu, Kempegowda
Předmět:
Zdroj: New Journal of Chemistry; 11/7/2024, Vol. 48 Issue 41, p17998-18003, 6p
Abstrakt: We herein present a novel and an unexpected method for the synthesis of α-ketothioesters by the reaction of pyrrolidine with α-oxodithioesters followed by treatment with methyl iodide in methanol. One of the synthetic applications of α-ketothioesters for the synthesis of 2-acylbenzimidazoles by acid-catalyzed cyclocondensation with benzene-1,2-diamines is described. The probable mechanisms of formation of α-ketothioesters and 2-acylbenzimidazoles are proposed. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index