PROCESS FOR PREPARATION 3-YLALOGENO-2-HYDROXYPROPYLTRI METHYLAMMONIUM HALIDE

摘要

A 3-halogeno-2-hydroxypropyltrimethyl ammonium halide of formula (II) is prepd. by reacting 2,3-dihydroxy propyltrimethyl ammonium halide of formula (I) with a halogenating agent. In the formulas, X1 and X2 are each Cl or Br. The halogenating agent is pref. thionylhalide or hydrogen bromide. (II) is useful for a synthetic intermediate of L- carnitine.