Unified Protocol for Fe-Based Catalyzed Biaryl Cross-Couplings between Various Aryl Electrophiles and Aryl Grignard Reagents
作者:Lei Wang、Yi-Ming Wei、Yan Zhao、Xin-Fang Duan
DOI:10.1021/acs.joc.9b00151
日期:2019.5.3
Ti(OEt)4/PhOM enabled a highly general iron-based catalyst system, which could efficiently catalyze the biaryl coupling reaction between various electrophiles (I, Br, Cl, OTs, OCONMe2, OSO2NMe2) and common or functionalized aryl Grignard reagents with high functional group tolerance. Selective couplings of aryl iodides and bromides over the corresponding oxygen-based electrophiles have been achieved, and
常用的FeCl 3 / SIPr与Ti(OEt)4 / PhOM的组合可实现高度通用的铁基催化剂体系,该体系可有效催化各种亲电试剂(I,Br,Cl,OTs,OCONMe 2, OSO 2 NMe 2)和具有高官能团耐受性的常用或官能化芳基格氏试剂。已经实现了芳基碘化物和溴化物在相应的基于氧的亲电试剂上的选择性偶联,因此,通过正交偶联策略方便地合成了阿尼芬净的三联苯甲酸中间体。