M. De Rosa et al., Enantioselective aldol condensation of O-silyl dienolates to aldehydes mediated by chiral BINOL-titanium complexes, TETRAHEDR-A, 11(15), 2000, pp. 3187-3195
Chiral BINOL-titanium complexes have been shown to catalyze enantioselectiv
e aldol reactions between dioxinone derivatives and a set of aldehydes. The
aldol adducts are isolated in good yields and high enantioselectivities. A
range of substitution patterns on the O-silyl dienolate is possible: alkyl
and benzyl substituents are tolerated. A simple reaction protocol is descr
ibed and provides an efficient alternative to the well-known methods for co
nducting enantioselective Mukaiyama aldol reactions. (C) 2000 Elsevier Scie
nce Ltd. All rights reserved.