The use of Hagemann's esters to prepare highly functionalized phenols and benzenes
作者:George Majetich、Scott Allen
DOI:10.3998/ark.5550190.0011.410
日期:——
Hagemann’s esters can be converted into highly functionalized phenols or arenes. The systematic functionalization of Hagemann’s ester derivatives permits the preparation of triand tetraalkylsubstituted phenols or tetra-, penta-, and hexaalkyl-substituted benzenes. Kotnis’s aromatization procedure was found to be solvent dependent, and Suzuki couplings were found to be sensitive to steric hindrance
Cobalt-Catalyzed Reductive Cross-Coupling To Construct Csp<sup>3</sup>–Csp<sup>3</sup> Bonds via Csp<sup>3</sup>–S and Csp<sup>3</sup>–X Bonds Activation
作者:Meng-Yu Gao、Corinne Gosmini
DOI:10.1021/acs.orglett.3c02993
日期:2023.10.27
coupling of benzyl sulfonium salts with alkylhalides forming Csp3–Csp3 bonds is described by using a Co-based catalytic system. The activation of the stable Csp3–S bond of benzyl sulfonium saltsunder mild reaction conditions leads to various functionalized alkyl derivatives. Preliminary mechanistic studies suggest the involvement of alkyl radicals formed from both alkylhalides and benzyl sulfoniums through