C. Celimene et al., UNEXPECTED DIASTEREOSELECTIVITY IN THE FORMATION OF 3,5-DISUBSTITUTEDINDOLIZIDINES BY INTRAMOLECULAR REDUCTIVE AMINATION, Tetrahedron : asymmetry, 7(6), 1996, pp. 1585-1588
The reductive amination of appropriate ketopyrrolidines leading to 3,5
-dialkylindolizidines usually gives stereoselectively the indolizidine
with a cis relative stereochemistry on the piperidine moiety. We repo
rt herein unexpected results concerning the effect of the nature of th
e C3 substituent on this stereoselectivity. (C) 1996 Elsevier Science
Ltd