The pyrrolidine and piperidine ring systems are prevalent in nature and present a worthy target for new synthetic methodology.'g2 While the palladium-catalyzed coupling of iodobenzene and 3, 5-hexadienylamine derivatives produce unsaturated pyrrolidines, the yields are less than 25%(eq lL3 Heck has previously examined the vinylic halides with alkenoic acids (eq 316 and intramolecular versions of this type of process using olefinic ...
