作者:Ajay K. Bose、Irene Kugajevsky
DOI:10.1016/0040-4020(67)85044-0
日期:1967.1
A synthesis of β-amino-β-lactams has been achieved by the cyclo-addition of diphenylketene and N,N,N′-trisubstituted amidines. Since these β-lactams undergo facile decomposition in presence of a trace of moisture, their purification proved very difficult. However, it was possible to isolate four crystallinegb-amino-β-lactams. The hydrolysis of 3,3-diphenyl-4-amino-2-azetidinones proceeds along a different
β-氨基-β-内酰胺的合成已通过二苯乙烯酮和N,N,N'-三取代am的环加成而实现。由于这些β-内酰胺在微量水分存在下易于分解,因此纯化非常困难。但是,有可能分离出四种结晶的gb-氨基-β-内酰胺。3,3-二苯基-4-氨基-2-氮杂环丁酮的水解与3,3-二烷基-4-氨基-2氮杂环丁酮的水解路径不同。提出了涉及在两个苯基稳定的碳3上形成碳负离子的机理。