文摘
With 2-hydroxyphenyl-functionalized enaminones and thiophenols as the starting materials, the facile synthesis of 3-sulfenylated chromones has been realized through a KIO3-catalyzed domino reaction of C−H sulfenylation and subsequent C−N-cleavage-based C−O bond formation. The reaction was performed under transition-metal-free conditions in ethyl lactate, a bioavailable ecofriendly medium.