作者:Paul Müller、Philippe Polleux
DOI:10.1002/hlca.19980810212
日期:1998.2.4
diazo ester 2b with chiral RhII catalysts proceeded via intramolecular aromatic carbenoid insertion to the racemic pyrrole derivative 5b in 72% yield. In contrast, the benzoylated precursor 16 afforded no ketorolac 1b when exposed to RhII. Methyl 2-diazo-4-phenylbutyrate (19), in turn, reacted, by 1,2-hydrogen migration rather than by aromatic substitution, to 20.
通过手性Rh II催化剂将重氮酯2b分解,通过分子内芳族类胡萝卜素插入外消旋吡咯衍生物5b中,产率为72%。相反,当暴露于Rh II时,苯甲酰化的前体16不提供酮咯酸1b。2-重氮-4-苯基丁酸甲酯(19)依次通过1,2-氢迁移而不是通过芳族取代反应生成20。