Photoredox/nickel dual catalysis achieves diverse benzamide and N-arylformamide formation, suggesting a sustainable synthesis approach.
A photocatalyst-tuned, Ni-catalyzed system enables switchable C-C or C-N coupling of aryl halides with formamide, directly synthesizing unprotected benzamides or N-arylformamides. Selectivity is governed by PC/base pairs. Benzophenone/K2HPO4 affords C-C-coupled benzamides, while thioxanthone TXO/NaHCO3 yields C-N-coupled N-arylformamides. This atom-economical method exhibits a broad scope and excellent regioselectivity, providing a sustainable platform for synthesizing unprotected benzamides and N-arylformamides as valuable building blocks in organic synthesis.
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Xu et al. (2025) studied this question.
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