Abstract

A variety of chiral cyanohydrins were readily prepared from aldehydes with TMSCN under the influence of chiral titanium complex formed in situ from <TEX>$Ti(O^iPr)_4$</TEX>/TADDOL(I) in the presence of <TEX>$Ph_3PO$</TEX> as additive. The double activation method produces trimethylsilylethers in excellent yield (95%) with moderate enantiomeric excess.

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