Gold(I)-catalyzed asymmetric cyclopropenation of internal alkynes

J Am Chem Soc. 2012 Jul 25;134(29):11916-9. doi: 10.1021/ja304506g. Epub 2012 Jul 9.

Abstract

Highly enantioselective cyclopropenation of internal alkynes with aryldiazoacetates was achieved using the binuclear gold catalyst (S)-xylylBINAP(AuCl)(2), activated by silver hexafluoroantimonate.