hide
Free keywords:
-
Abstract:
Lithiated heterocycles LiR (R = 2-furyl, 2-thienyl, 2-pyridyl, etc.) add diastereoselectively to optically active α-N,N-dibenzylamino aldehydes (PhCH2)2NCHR1CHO (R1 = PhCH2, Me, Me2CH, Me3CSiMe2OCH2, etc.) with 80-95% nonchelation control to give syn alcs. (PhCH2)2NCHR1CHROH (same R, R1).