Lewis Acid Controlled Regioselective 1,2 and 1,4 Reaction of ,-Unsaturated Carbonyl Compounds with TiIV Enolates Derived from -Diazo -Keto Carbonyl CompoundsGuisheng Deng, Jianbo Wang, Zhaohui Qu et al.|Angewandte Chemie International Edition|2002Cited by 44