Metal free cross-dehydrogenative N-N coupling of primary amides with Lewis basic amines.

Kathiravan, Subban; Dhillon, Prakriti; Zhang, Tianshu; Nicholls, Ian A · Nat Commun · 2024

basic_science · Level V

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Abstract

Hydrazides, N-N containing structural motifs, are important due to their presence in a wide variety of biologically significant compounds. While the homo N-N coupling of two NH moieties to form the hydrazide N-N bond is well developed, the cross-dehydrogenative hetero N-N coupling remains very unevolved. Here we present an efficient intermolecular N-N cross-coupling of a series of primary benzamides with broad range of Lewis basic primary and secondary amines using PhI(OAc)<sub>2</sub> as both a terminal oxidant and a cross-coupling mediator, without the need for metal catalysts, high temperatures, and inert atmospheres, and with substantial potential for use in the late-stage functionalization of drugs.