N-benzyl-N,N,N-triethylammonium chloride; potassium carbonate in acetone Ambient temperature;

1: 1.) K2CO3, TEBA / 1.) acetone, reflux, 1 h, 2.) acetone, reflux, 3 h 2: 85 percent / K2CO3, TEBA / acetone / Ambient temperature View Scheme