Aza-Michael Addition Reactions of Hydrazones with Activated Alkynes Catalyzed by Nitrogen-Containing Organic Bases

[摘要]：Several highly efficient DABCO (1,4-diazabicyclo[2.2.2]-octane)-catalyzed Michael-type reactions of hydrazones with activated alkynes are described in this paper. This aza-Michael addition reaction can be applied to different types of hydrazones, such as hydrazones 1 and hydroxy-bearing hydrazones 5. The corresponding adducts are achieved in high yields under mild reaction conditions. DABCO-promoted aza-Michael addition reactions were successfully applied to a serious of hydrazones with activated alkynes to afford the corresponding adducts in moderate to good yields.

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