A general palladium-catalyzed cross-coupling of aryl fluorides and organotitanium (IV) reagents
作者:Xiao-Yun He
DOI:10.1007/s00706-021-02796-6
日期:2021.7
Pd(OAc)2/1-[2-(di-tert-butylphosphanyl)phenyl]-4-methoxy-piperidine was demonstrated to effectively catalyze cross-coupling of aryl fluoride and aryl(alkyl) titanium reagent. Both electron-deficient and electron-rich aryl fluoride can react effectively with nucleophile and provide extensive functional groups tolerance. 2-Arylated product was realized by selective activation of the C–F bond. Graphic
Iron-catalyzed oxidative biaryl cross-couplings <i>via</i> mixed diaryl titanates: significant influence of the order of combining aryl Grignard reagents with titanate
作者:Kun Ming Liu、Juan Wei、Xin Fang Duan
DOI:10.1039/c5cc00514k
日期:——
The mixed diaryl titanates were used for the first time to modify the reactivity of two aryl Grignardreagents. Two titanate intermediates, Ar[Ar'Ti(OR)3]MgX and Ar'[ArTi(OR)3]MgX, formed via alternating the sequence of combining Grignardreagents with ClTi(OR)3 showed a significant reactivity difference. Taking advantage of such different reactivity, two highly structurally similar aryl groups could