Preparation and in situ use of unstable <i>N</i>-alkyl α-diazo-γ-butyrolactams in Rh<sup>II</sup>-catalyzed X–H insertion reactions
作者:Maria Eremeyeva、Daniil Zhukovsky、Dmitry Dar’in、Mikhail Krasavin
DOI:10.3762/bjoc.16.55
日期:——
N-Alkyl α-diazo-γ-butyrolactams, previously found to be unstable and to undergo unproductive dimerization to bishydrazones, were successfully converted immediately to various X–H insertion products with alcohols, aromatic amines and thiols via an in situ RhII-catalyzed reaction. With aliphatic amines or unreactive, sterically hindered anilines, the reactions tended to yield enamine adducts.
N-烷基α-重氮-γ-丁内酰胺以前被发现不稳定,并且无法进行二聚生成双hydr,已通过原位Rh II催化,立即与醇,芳族胺和硫醇成功转化为各种X–H插入产物。反应。与脂族胺或未反应的,空间受阻的苯胺相比,反应趋于产生烯胺加合物。