| 摘要 |
<p>A process is provided by which quaternary alkylammonium salts of the following general formula: R1R2R3R4N+ • BF4- (wherein R¿1?, R2, R3 and R4 are each independently C1-5 alkyl) can be easily prepared at high purity even without recrystallization. This process is characterized by reacting a quaternary ammonium halide of the general formula: R1R2R3R4N?+• X¿1- (wherein X¿1? is Cl or Br) with HBF4 in an alcohol.</p> |
