Stereoelectronic control of the regioselectivity of both electrophilic and nucleophilic substitution of η<sup>6</sup>-(1,1-dimethylindane)tricarbonyl-chromium(0)
作者:W. Roy Jackson、Ian D. Rae、Margaret G. Wong、Martin F. Semmelhack、John N. Garcia
DOI:10.1039/c39820001359
日期:——
η 6 -(1,1-Dimethylindane)tricarbonylchromium(0) reacts with the nucleophile LiC(Me)2CN at C-5, a position eclipsed by a metal carbonyl bond in the preferred conformation of the molecule, and at C-6 and C-4, positions not eclipsed by metal carbonyl bonds with the electrophile MeCO+, confirming that stereoelectronic effects can dominate the regioselectivity of substitution of arenetricarbonylchromium
η 6 - (1,1-二甲基茚满)tricarbonylchromium(0)反应与亲核试剂LIC(ME)2 CN在C-5,通过在分子的优选的构象的金属羰基键黯然失色的位置,并且在C-6 C-4和C-4位置不被亲电子MeCO +的金属羰基键所掩盖,这证实了立体电子效应可以支配三羰基铬单元采用高度优选构象的对苯三羰基铬配合物的区域选择性。