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Simple Synthesis of 2-Aminoaryliminophosphoranes from N-Aryl-2-nitroso­anilines and Their Application in 2-Aminobenzimidazole Synthesis

Emilia Łukasik, Zbigniew Wróbel*

*Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44, 01-224 Warsaw, Poland, Email: zbigniew.wrobelicho.edu.pl

E. Łukasik, Z. Wróbel, Synlett, 2014, 25, 217-220.

DOI: 10.1055/s-0033-1340055 (free Supporting Information)


Abstract

Condensation of N-aryl-2-nitrosoanilines with triphenylphosphine gives substituted aryliminophos­phoranes which in a subsequent reaction with alkyl isocyanates furnish 2-alkylaminobenzimidazole derivatives in high yields.

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Key Words

cyclization, condensation, heterocycles, annulation, benzimidazoles


ID: J60-Y2014