The trimethylsilyl trifluoromethanesulphonate catalyzed condensation of silyl ketene acetals with imines afforded β-amino esters with prevalent anti relative diastereoselectivity (up to 100%). Some anti β-amino esters have been then cyclized to trans β-lactams.
DIASTEREOSELECTION IN TRIMETHYLSILYL TRIFLUOROMETHANESULFONATE CATALYZED REACTION OF SILYL KETENE ACETALS WITH IMINES
GUANTI, G;NARISANO, E;BANFI, L
1987-01-01
Abstract
The trimethylsilyl trifluoromethanesulphonate catalyzed condensation of silyl ketene acetals with imines afforded β-amino esters with prevalent anti relative diastereoselectivity (up to 100%). Some anti β-amino esters have been then cyclized to trans β-lactams.
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