The retro Grignard addition reaction revisited: the reversible addition of benzyl reagents to ketones
作者:Stig Holden Christensen、Torkil Holm、Robert Madsen
DOI:10.1016/j.tet.2013.12.070
日期:2014.2
The Grignard addition reaction is known to be a reversible process with allylic reagents, but so far the reversibility has not been demonstrated with other alkylmagnesium halides. By using crossover experiments it has been established that the benzyl addition reaction is also a reversible transformation. The retro benzyl reaction was shown by the addition of benzylmagnesium chloride to di-tert-butyl
已知格利雅加成反应是与烯丙基试剂可逆的过程,但到目前为止,尚未证明可与其他烷基卤化镁实现可逆性。通过使用交叉实验,已经确定苄基加成反应也是可逆的转化。通过向二叔丁基酮中添加氯化苄基镁,然后将苄基和酮部分都与另一种底物进行交换,可以显示出苄基逆反应。用苯基溴化镁和叔丁基氯化镁进行了类似的实验,但在这两种情况下,格氏加成反应均未显示出任何逆转化的迹象。