Highly stereoselective titanium-mediated addition of organocerium reagents to β-keto amides: an efficient synthesis of stereodefined β-hydroxy amides having a tertiary alcoholic fragment
作者:Giuseppe Bartoli、Marcella Bosco、Enrico Marcantoni、Massimo Massaccesi、Samuele Rinaldi、Letizia Sambri
DOI:10.1016/s0040-4039(01)01188-1
日期:2001.8
A highly efficient and stereoselective protocol for the TiCl4-mediated addition of organocerium reagents to β-keto amides is now available. The method allows the introduction of a large variety of carbon frameworks, including primary, secondary and tertiary alkyl chains, as well as aromatic, alkynylic and benzylic moieties, in high yields and with high stereoselection.
现在可以使用高效且立体选择性的方案,将TiCl 4介导的有机铈试剂添加到β-酮酰胺中。该方法允许以高收率和高立体选择性引入各种各样的碳骨架,包括伯,仲和叔烷基链,以及芳族,炔基和苄基部分。