DBU-Mediated Addition of α-Nitroketonesto α-Cyano-enones and αβ-Unsaturated α-Ketoesters:Synthesis of Dihydrofurans and Conjugated Dienes

摘要

1,8-Diazabicyclo[5.4.0]undec-7-ene-mediated reactions of α-nitroketones with α-cyano-enones and α,β-unsaturated α-ketoesters have been developed. The products, namely, dihydrofurans and conjugated dienes, were isolated in moderate to good yields, and a range of substitutions were tolerated.