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Rh-Catalyzed Denitrogenative Reaction of N-Sulfonyl-1,2,3-triazoles with Isatoic Anhydrides and Oxadiazolones. 2018

Kuntal Pal, and Abdul Hoque, and Chandra M R Volla
Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai, 400076, India.

A convenient and simple, RhII -catalyzed denitrogenative method for the synthesis of biologically interesting 2-amino-benzoxazinones and 5-amino-oxadiazoles from readily available isatoic anhydrides and oxadiazolones has been developed. These reactions proceed via an O-H insertion onto α-imino RhII -carbenoid species followed by a rearrangement. The scope of the reaction can also be extended to benzoxazinones to access amino-substituted benzoxazines.

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