Pd-Catalyzed, <i>ortho</i> C–H Methylation and Fluorination of Benzaldehydes Using Orthanilic Acids as Transient Directing Groups
作者:Xiao-Yang Chen、Erik J. Sorensen
DOI:10.1021/jacs.8b00048
日期:2018.2.28
using commercially available orthanilic acids as transient directing groups. In these reactions, the 1-fluoro-2,4,6-trimethylpyridinium salts can be either a bystanding F+ oxidant or an electrophilic fluorinating reagent. An X-ray crystal structure of a benzaldehyde ortho C-H palladation intermediate was obtained using triphenylphosphine as the stabilizing ligand.
直接的、Pd 催化的邻位 CH 甲基化和苯甲醛氟化已经使用市售的邻苯甲酸作为瞬时导向基团完成。在这些反应中,1-氟-2,4,6-三甲基吡啶鎓盐可以是旁通的 F+ 氧化剂或亲电子氟化试剂。使用三苯基膦作为稳定配体获得苯甲醛邻位 CH 钯化中间体的 X 射线晶体结构。