作者:Joyce Wei Wei Chang、Eugene Yurong Chia、Christina Li Lin Chai、Jayasree Seayad
DOI:10.1039/c2ob06840k
日期:——
The scope and limitations of direct arylation of fluorinated aromatics with aryl sulfonates was examined. Pd(OAc)2, in the presence of MePhos and KOAc in THF, efficiently catalyzed the direct arylation of fluoro aromatics with aryl triflates under ambient conditions. Sterically hindered triflates and heteroaryl triflates gave good to excellent yields of the cross coupled products using a modified catalyst
考察了氟化芳族化合物与芳基磺酸盐直接芳基化的范围和局限性。在THF中,在MePhos和KOAc存在下,Pd(OAc)2有效地催化了氟代芳烃与芳基三氟甲磺酸酯的直接芳基化。空间位阻的三氟甲磺酸酯和三氟甲磺酸杂芳使用其中涉及的Pd(OAC)改性的催化剂体系给出了良好的交叉偶联产物的优异的产率2 -RuPhos在100°C下。还以Pd(OAc)2 -SPhos为催化剂,建立了缺电子芳烃与甲磺酸甲磺酸酯的直接芳基化反应。甲苯– 120°C下的t BuOH。