作者:M. Lasperas、A. Perez-Rubalcaba、M.L. Quiroga-Feijoo
DOI:10.1016/0040-4020(80)80191-8
日期:1980.1
The influence of a m- or p-polar substituent in 1-aryl 2-phenyl propanones, on addition reactions with CH3MgBr in ether at 30° has been investigated. The invariability of asymmetric induction as a function of substituent, and the correlation of rate constant ratios with Hammett σ constants (π = 0,24, r = 0,97), are consistent with a four-centre pericyclic concerted mechanism with concomitant departure
研究了1-芳基2-苯基丙烷中的m-或p-极性取代基对与CH 3 MgBr在乙醚中于30°进行加成反应的影响。不对称感应作为取代基的函数的不变性,以及速率常数比与Hammettσ常数(π= 0,24,r = 0,97)的相关性与四中心周轮协调机制一致,伴随着溶剂分子。