Kinetics and possible mechanisms of alkaline hydrolysis of alkoxy-NNO-azoxy compounds
作者:I. N. Zyuzin、D. B. Lempert
DOI:10.1134/s1070363210090124
日期:2010.9
Hydrolysis rate of alkoxy-NNO-azoxy compounds like di(methoxy-NNO-azoxy)methane I, di-(methyl-NON-azoxy)formal II, di(methoxy-NNO-azoxy)methane III, and 2,2-di(methoxy-NNO-azoxy)propane IV in 5 M KOH solution was measured by manometric method at 80°C; rates relation is 1:40:540:10. Reversible deprotonation to form C-anions followed by their rapid decomposition is a presumable mechanism for compounds
二(甲氧基-NNO-甲氧基)甲烷I,二-(甲基-非-甲氧基)甲醛II,二(甲氧基-NNO-甲氧基)甲烷III和2,2-二甲氧基等烷氧基-NNO-甲氧基化合物的水解速率在80℃下通过压力法测量在5M KOH溶液中的(甲氧基-NNO-氮氧基)丙烷IV;比率关系是1:40:540:10。可逆的质子化反应形成C-阴离子,然后迅速分解,这是化合物I-III的推测机制。在化合物IV的情况下,OH阴离子对CH 3 ON = N(O)基团的碳原子的亲核攻击是最可能的水解第一步。