A Very Strong Methylation Agent: [Me₂Cl][Al(OTeF₅)₄]
Sebastian Hämmerling, Günther Thiele, Simon Steinhauer, Helmut Beckers, Carsten Müller, Sebastian Riedel – 2019
A new chloronium‐containing salt, [Me₂Cl][Al(OTeF₅)₄], was synthesized on multigram scale by means of a simple one‐pot procedure. The isolated product can be handled at room temperature and used as a strong electrophilic methylation agent. This is demonstrated by the methylation of the very weak bases P(CF₃)₃, PF₃, MeI, and MeBr.