Abstract
tert-Butyl 3-allyl-4-oxopiperidine-1-carboxylate and its derivatives substituted at the 3-position and in the allylic fragment reacted with L-selectride in anhydrous tetrahydrofuran to give tert-butyl (3R,4S)-3-allyl-4-hydroxypiperidine-1-carboxylates (cis isomers) in quantitative yield. The Mitsunobu reaction of the latter with formic or benzoic acid, followed by alkaline hydrolysis, afforded the corresponding trans (3R,4R) isomers.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have