A few types of amines XNH2 were investigated for the formation of β-lactams via the cycloaddition of the corresponding Schiff bases with azidoacetyl chloride. Among the β-lactams formed, only the N-p,p′-dimethoxybenzhydryl compounds could be transformed to N-unsubstituted azetidinones by removal of the N-substituent with ceric ammonium nitrate. Conversion of those N-unsubstituted intermediates to 3-acylated monobactams was studied in the 4-styryl series.
研究了几种胺类化合物XNH2,通过它们相应的希夫碱与叠氮乙酰氯的环加成反应形成β-内酰胺。在形成的β-内酰胺中,只有N-对,对'-二甲氧基二苯基化合物可以通过使用硝酸铵去除N-取代基转化为N-未取代的氮杂环酮。研究了那些N-未取代中间体转化为3-酰基单巴坦的过程,特别是在4-苯乙烯基系列中。