<i>ortho</i>
-Directing Chromium Arene Complexes as Efficient Mediators for Enantiospecific C(sp<sup>2</sup>
)-C(sp<sup>3</sup>
) Cross-Coupling Reactions
作者:Raphael Bigler、Varinder K. Aggarwal
DOI:10.1002/anie.201711816
日期:2018.1.22
ortho‐lithiation of chromium arene complexes followed by boronate formation and oxidation, occurs with complete ortho‐selectivity and enantiospecificity to give the coupling products in excellent yields and with high functional group tolerance. An intermediate chromium arene boronate complex was characterized by X‐ray, NMR, and IR experiments to elucidate the reaction mechanism.
The study of catalyst effects on the complexation of arenes with Cr(CO)6. An overview
作者:Milan Hudček、Vladimir Gajda、Štefan Toma
DOI:10.1016/0022-328x(91)80046-m
日期:1991.8
The results from our thorough investigation of different catalystic effects on the rate and yields of complexation of arenes with Cr(CO) are presented with a short review of the subject. With decalin as solvent the following substances were found to be the best catalysts: butyl acetate, ethyl formate, and dimethyl succinate. Butyl acetate proved to be the catalyst also in-di-n-butyl ether. Special