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Article Abstract
Transition metal-controlled divergent annulation reactions of azomethine imines with iodonium ylides -centered [1,2]-rearrangement have been developed. The azomethine imino group, as a switchable and transient directing group (DG), underwent intramolecular nucleophilic addition and generated bicyclic diaziridine, which facilitated the -centered [1,2]-rearrangement and subsequent divergent annulations in the presence of different metal complexes as the catalysts. The benzo[]chromen-1-one and pyrano[]isochromene scaffolds could be independently constructed with Rh(III) and Ru(II), respectively. It was worth noting that the azomethine imino group was employed first as the switchable DG through rearrangement progress.
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