Practical Preparation of <i>N</i>-(1-Alkynyl)sulfonamides and Their Remote Diastereoselective Addition to Aldehydes via Titanation
作者:Shuji Hirano、Ryoichi Tanaka、Hirokazu Urabe、Fumie Sato
DOI:10.1021/ol036396b
日期:2004.3.1
Aliphatic and aromatic suffonamides were alkynylated with 1-bromo-1-alkynes in the catalytic presence of Cul to give N-(1-alkynyl)sulfonamides in good to excellent yields. The acetylene-titanium complexes generated from N-(1-alkynyl)benzosultams underwent diastereoselective addition to aldehydes.