of interest as an upgraded feedstock recyclable material derived from poly(l-lactic acid). To achieve more efficient process of PTMG production from lactic acid, hindered lithium amide supported by cross-linked polystyrene as a deprotonation reagent was prepared from commercially available Merrifield resin, 2,2,6,6-tetramethyl-4-pipedinol, and n-butyllithium. A polymer-supported lithium 2,2,6,6-tetr
聚(四甲基
乙交酯)[
PTMG]作为衍生自聚(1-
乳酸)的升级的原料可回收材料,目前引起了广泛的关注。从
乳酸实现
PTMG生产更有效的方法,受阻通过交联聚
苯乙烯作为去质子试剂支持
氨基化
锂是从市售-Merrifield
树脂,2,2,6,6-四甲基-4- pipedinol,和制备Ñ -丁基
锂。发现聚合物负载的
2,2,6,6-四甲基哌啶锂/甲基
碘系统是
乳酸衍
生物α-甲基化反应的有效条件,在室温下可提供优异的α-甲基化产物收率(98%)温度,反应时间非常短。