Stereoselective organoselenium-induced cyclization of N-allyl acethydrazides to 1,3,4-oxadiazines or N-acetyl pyrazolidines

Article abstract of DOI:10.1016/0040-4020(96)00675-8

N-Allyl acethydrazides easily give rise to organoselenium-induced cyclization reactions to afford phenylseleno substituted 5,6-dihydro-4H-1,3,4-oxadiazines or N-acetyl pyrazolidines as the kinetically or the thermodynamically controlled products, respectively.