Acid hydrolysis of diazepam. Kinetic study of the reactions of 2-(N-methylamino)-5-chlorobenzophenone, with HCl in MeOH–H2O
作者:N. Sbarbati Nudelman、R.G. de Waisbaum
DOI:10.1002/jps.2600840817
日期:1995.8
In the acid hydrolysis of diazepam (1), several unusual products, apart from 2-(N-methylamino)-5-chlorobenzophenone (2) and glycine, were isolated. On the assumption that some of those products could arise from further degradation of 2, the reaction of this compound with 0.5-2 M HCl was studied, in 1:1 MeOH-H2O, at 60 and 80 degrees C. Several unexpected products were isolated from the reaction of 2
在地西epa(1)的酸水解中,除了2-(N-甲基氨基)-5-氯二苯甲酮(2)和甘氨酸之外,还分离了几种不寻常的产物。假设其中一些产物可能是由于2的进一步降解而产生的,在60和80摄氏度下于1:1 MeOH-H2O中研究了该化合物与0.5-2 M HCl的反应。由2与HCl的反应,即2-氨基-5-氯二苯甲酮(3),2-(N,N-二甲基氨基)-5-氯二苯甲酮(4),2-(N-甲基氨基)-3,5-二氯二苯甲酮(5),2-氨基-3,5-二氯二苯甲酮(6),2,4-二氯-10-甲基-9,10- cri啶酮(7)和2,4-二氯-9,10-ac啶酮( 8)。在当前反应条件下,产生产物3-8的甲基转移,氯化和环化反应是出乎意料的。反应速度为2