MgCl2-Accelerated Addition of Functionalized Organozinc Reagents to Aldehydes, Ketones, and Carbon Dioxide
作者:Albrecht Metzger、Sebastian Bernhardt、Georg Manolikakes、Paul Knochel
DOI:10.1002/anie.201000634
日期:2010.6.21
Pump it up! The sluggish reactivity of organozinc reagents in additions to aldehydes, ketones, and CO2 can be increased by MgCl2, which is usually generated in the preparation of the zinc reagent. The direct reaction with CO2, in particular, opens an expeditious route to phenylacetic acid derivatives, as demonstrated in a short synthesis of ibuprofen (see scheme).
加油!MgCl 2可以增加除醛,酮和CO 2之外的有机锌试剂的反应迟钝,这通常是在锌试剂的制备过程中产生的。特别是与CO 2的直接反应为苯乙酸衍生物的开发开辟了一条捷径,如布洛芬的短暂合成所证明的(见方案)。