Matching Carbenes and Sulfoximines via Ketenes Generated from α‐Diazoketones by Blue Light

Abstract Although N H‐sulfoximines are known to react with carbenes by deamidation pathways, they can be combined if the latter are generated as transients from diazo compounds under blue light irradiation to undergo rapid Wolff rearrangement to generate reactive ketenes. Subsequent addition of sulfoximines or sulfonimidamides lead to N ‐acylated products in good to excellent yields. Beneficial are the mild reaction conditions, which neither require the addition of a base nor an oxidant or a metal catalyst. magnified image