Zinc‐Catalyzed Selective Reduction of Cyclic Imides with Hydrosilanes: Synthesis of ω‐Hydroxylactams

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Cyclic imides were selectively reduced to the corresponding ω‐hydroxylactams in high yields with (EtO) 3 SiH (triethoxysilane) or PMHS (polymethylhydrosiloxane) under catalysis of zinc diacetate dehydrate [Zn(OAc) 2 ⋅2 H 2 O] (10%) and tetramethylethylenediamine (TMEDA) (10%). This catalytic protocol showed good functional group tolerance as well as excellent regioselectivity for unsymmetrical imides bearing coordinating groups adjacent to the carbonyl. magnified image