First synthesis of chiral 3‐vinylindoles as 4π‐components for diels‐alder reactions

Abstract

Abstract The first syntheses of chiral 3‐ and 2‐vinylindoles bearing sulfoxide or (‐)‐menthyloxy functional groups at the β‐vinyl positions by way of procedures based on the Horner‐Wadsworth‐Emmons and Wittig reactions, respectively, are described. Some Diels‐Alder reactions demonstrating the 4π‐reactivity of these compounds are reported.