Palladium-catalyzed electrophilic C–H fluorination of arenes using oxazoline as a removable directing group
作者:David A. Gutierrez、Wan-Chen Cindy Lee、Yuning Shen、Jie Jack Li
DOI:10.1016/j.tetlet.2016.10.079
日期:2016.11
Dimethyloxazoline was rationally designed to act as a removable ortho-directing group (DG) for the palladium-catalyzed C–H electrophilic fluorination of arenes. Using NFSI as the fluorinating agent, and Pd(II), Ag(I) catalytic system, electrophilic C(sp2–H) ortho-fluorination took place on a variety of aryl substrates to afford the corresponding mono- and di-fluorinated products.
二甲基恶唑啉经过合理设计,可作为钯可催化芳烃的C–H亲电氟化反应的可移动邻位导向基团(DG)。使用NFSI作为氟化剂,以及Pd(II),Ag(I)催化体系,亲电C(sp 2 -H)邻位氟化反应在各种芳基基质上进行,从而得到相应的单氟化和二氟化产物。