β-lactams from esters and silylimines: A revaluation. Synthesis of N-unsubstituted 4-alkyl-β-lactams
作者:Gianfranco Cainelli、Daria Giacomini、Mauro Panunzio、Giorgio Martelli、Giuseppe Spunta
DOI:10.1016/s0040-4039(00)96733-9
日期:1987.1
The first preparation of enolizable silylimines is reported. The “in situ” trapping of these species with lithium enolates of esters gives rise in fairly good yields to N-unsubstituted 4-alkyl-β-lactams.
报道了可烯丙基化的水飞蓟宾的第一种制备方法。用酯的烯醇锂“原位”捕集这些物质可提高N-未取代的4-烷基-β-内酰胺的收率。