Nitriles in Heterocyclic Synthesis: A New Synthesis of Some 4H-Naphthopyrans, 2H-Benzothiopyrans and Their Fused Derivatives
作者:Abdel-Fattah A. Harb、Awatef M. El-Maghraby、Saoud A. Metwally
DOI:10.1135/cccc19921570
日期:——
α,β-Unsaturated nitriles are versatile reagents and their chemistry has received considerable attention. The reactivity of cinnamonitriles I toward active methylene reagents has been extensively utilised for synthesis of pyranes.