Abstract
A mild and efficient method for the synthesis of branched N-allylic lactams and related N-heteroaromatics was reported. This strategy involves a DABCO-catalyzed SN2′-SN2′ type N-allylic alkylation with Morita−Baylis−Hillman (MBH) carbonates. A wide scope of lactams and related N-heterocycles as well as MBH carbonates are well tolerated, and various branched N-substituted products were obtained in moderate to excellent yields. The utility of this method was further demonstrated by the gram-scale synthesis and diverse transformation of the products.
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