Phenol-mediated decarboxylative proton transfer of γ-methylidene-δ-valerolactones: an approach towards (E)-2,4-pentadienoates

Abstract

A phenol-mediated decarboxylative proton transfers of -Methylidene--valerolactone (GMDVs) was developed, affording the target polysubstituted (E)-2,4-pentadienoates in 99% yields and with up to 99:1 E/Z. In this reaction, 4-NO2C6H4OH as dual...