Stereospecific palladium(II)-catalyzed cyclocarbonylation of 3-aryl-1-propynes and iodo arenes or acid chlorides to form (E)-3-arylidenebutenolides
摘要:
Iodoarenes react with 3-aryl-1-propynes and carbon monoxide, in the presence of palladium acetate and triphenylphosphine, to form (E)-arylidenebutenolides in 33-88% isolated yields. The same product is formed by substitution of acid chloride for a iodoarene.