KO<sup>t</sup>Bu-Catalyzed lithiation of PMDTA and the direct functionalization of bridged alkenes under mild conditions
作者:Yuntao Wang、Jialin Liu、Lin Huang、Ranran Zhu、Xueyan Huang、Ross Moir、Jianhui Huang
DOI:10.1039/c7cc02006f
日期:——
A practical preparation of the reagent PMDTALi using a super base system under mild conditions has been developed. This PMDTALi base has been demonstrated to be a very efficient reagent for the lithiation of bridged alkenes via direct deprotonation. Further reactions with electrophiles and also coupling reactions in the presence of Pd catalysts provide the bridged alkenes with a broad range of functional
已经开发了在温和条件下使用超级碱系统实际制备试剂PMDTALi的方法。该PMDTALi碱已被证明是通过直接去质子化对桥接烯烃进行锂化的一种非常有效的试剂。与亲电试剂的进一步反应以及在Pd催化剂存在下的偶联反应为桥连的烯烃提供了广泛的官能团,包括甲硅烷基,烷基,卤素和芳基取代基。这种新型锂试剂的使用为用于合成挑战性系统去质子化的锂试剂的选择带来了新的多样性。