Highly selective 1,2- and 1,4-addition of silyl enol ethers to alpha,beta-unsaturated carbonyl compounds in 5 M lithium perchlorate-nitromethane medium
S. Sankararaman et R. Sudha, Highly selective 1,2- and 1,4-addition of silyl enol ethers to alpha,beta-unsaturated carbonyl compounds in 5 M lithium perchlorate-nitromethane medium, J ORG CHEM, 64(6), 1999, pp. 2155-2157