Synthesis of (E)- and (Z)-1-thiocyanatobuta-1,3-dienes and their Diels–Alder reaction
Abstract
1-Thiocyanatobuta-1,3-dienes react with strong dienophiles to produce directly the rearranged products of type (6)via a combination of a Diels–Alder reaction with a [3,3] sigmatropic shift.