THE ASYMMETRIC KHARASCH REACTION - CATALYTIC ENANTIOSELECTIVE ALLYLIC ACYLOXYLATION OF OLEFINS WITH CHIRAL COPPER(I) COMPLEXES AND TERT-BUTYL PERBENZOATE
Olefins were treated with tert-butyl perbenzoate in the presence of chiral copper(I) triflate bisoxazoline complexes to give non-racemic allyl benzoates as products. The yields range from 34 to 62% and the enantiomeric excesses from 30 to 81%. A model for the selectivity is proposed.