Benzoyl esters of propargylic alcohols can be prepared in an enantiose
lective manner by direct copper-catalysed acyloxylation of alkynes wit
h t-butyl peroxybenzoate. High product yields and reasonable levels of
induction are obtained upon the oxidation of non-terminal alkynes wit
h excess perester using copper-bisoxazoline complexes as catalysts. (C
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