Electronic Control on Linear versus Branched Alkylation of 2-/3-Aroylbenzofurans with Acrylates: Combined DFT and Synthetic Studies
作者:Kolluru Srinivas、Yuvraj Dangat、Yadagiri Kommagalla、Kumar Vanka、Chepuri V. Ramana
DOI:10.1002/chem.201700643
日期:2017.6.1
synergistic operation of the steric and electronic effects favoring the branched alkylation. Further DFT investigations on the alkylation of the isomeric 3‐aroylbenzofurans indicated a preference for the linear alkylation and this has been verified experimentally. Overall, the observed/calculated complementary selectivity in the alkylation of 2‐/3‐aroylbenzofurans with acrylates reveals that the substrate‐dependent
通过计算与两个关键步骤相关的动力学(丙烯酸酯与中间钌环的配位),研究了控制2-芳基苯并呋喃与丙烯酸酯通过丙烯酸催化的羰基化CH活化的异常支化烷基化的因素。以及随后的迁移插入反应-借助DFT计算进行了研究。计算中考虑了每种烷基化方式的八个可能的方向。从这些计算中,已经理解,存在有利于支链烷基化的空间效应和电子效应的协同作用。DFT对异构3-芳基苯并呋喃的烷基化的进一步研究表明,偏爱线性烷基化,这一点已通过实验进行了验证。全面的,