Catalytic Asymmetric Protonation of Silyl Ketene Imines
摘要:
An efficient catalytic and highly enantioselective protonation of silyl ketene imines is described. The reaction is catalyzed by the chiral phosphoric acids TRIP or STRIP in the presence of a stoichiometric amount of methanol as the proton source and silyl acceptor. A variety of substituted racemic silyl ketene imines have been transformed into highly enantioenriched nitriles.
The present invention relates to HIV replication inhibitors of formula (I) as defined in the specification their use as a medicine, their processes for preparation and pharmaceutical compositions comprising them.