(+/-)-5-(4-amino-3-methylphenyl)-8-methyl-8,9-dihydro-7H-1,3-dioxolo[4,5-h][2,3]benzodiazepine   、                                                                                      
(2R,3R)-4-[(4-氯苯基)氨基]-2,3-二羟基-4-氧代-丁酸                                                                                                                                                                                              以
                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                    反应 20.0h,
                                                                                                                以36%的产率得到(S)-(-)-5-(4-amino-3-methylphenyl)-8-methyl-8,9-dihydro-7H-1,3-dioxolo[4,5-h][2,3]benzodiazepine salt with L-tartaric acid semi-4-chloroanilide