Metalation of toluene and cumene with alkali metal-crown ether complexes
作者:A. L. Shabanov、N. M. Seidov、U. A. Gasanova、Z. O. Kakhramanova、M. M. Gasanova
DOI:10.1134/s1070428009010047
日期:2009.1
Metalation of toluene and isopropylbenzene with alkali metal-crown ether complexes led to the corresponding α-metalated alkylbenzenes. Treatment of the latter in succession with solid carbon dioxide, water, and hydrochloric acid gave carboxylic or dicarboxylic acids in 65–78% yield. Metalation of isopropylbenzene with sodium or potassium crown ether complexes above 90°C was accompanied by cleavage