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Letters in Organic Chemistry

Editor-in-Chief

ISSN (Print): 1570-1786
ISSN (Online): 1875-6255

Synthesis of Benzimidazolones, Benzooxazolones, 2-amino-benzothiazoles from Ethyl Cyanoformate and o-phenylene Diamines, o-aminophenols, oaminothiophenols Promoted by Lithium Bromide

Author(s): Deepak V. Dekhane, Shivaji S. Pawar, Sunil V. Gupta, Murlidhar S. Shingare and Shivaji N. Thore

Volume 8, Issue 6, 2011

Page: [406 - 411] Pages: 6

DOI: 10.2174/157017811796064449

Price: $65

Abstract

The lithium bromide mediated condensation of 1-amino-2-heteroaryl substrates with ethyl cyanoformate, to obtain versatile alkylcarbamate protected benzoheteroazolones was studied. This unprecedented reaction could be used to furnish different azolones like 2-benzimidazolones, 2-benooxazolones and 2-amino-thiazoles in good yields.

Keywords: Imidazolones, arylenediamine, ethyl cyanoformate, lithium bromide, lithium, bromide, heteroaryl, benzoheteroazolones, benzimidazolones, azolones, alkylcarbamate


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