Methoxylation of Acyl Fluorides with Tris(2,4,6-trimethoxyphenyl)phosphine via C–OMe Bond Cleavage under Metal-Free Conditions

Acyl fluorides are subjected to methoxylation with tris(2,4,6-trimethoxyphenyl)phosphine (TMPP) to afford the corresponding methyl esters in good to excellent yields. This transformation is featured by C(sp2)–OMe bond cleavage under metal-free conditions. Unprecedented utilization of TMPP as a methoxylating agent realized the installation of an OMe group into the desired products.