The mechanistic study and synthetic applications of the base treatment in the ozonolytic reactions
作者:Yung-Son Hon、Sheng-Wun Lin、Ling Lu、Yao-Jung Chen
DOI:10.1016/0040-4020(95)98699-i
日期:1995.4
E1cb mechanism is the overwhelming process in the reaction of bases and ozonides. As a quenching agent in the ozonolysis of a variety of alkenes, the reactions involving triethylamine often gave better yields and proceeded faster than those involving methyl sulfide. On the other hand, in the presence of 4 Å molecular sieves, the secondary amines reacted with mono- and 1,1-di-substituted ozonides to afford
E1cb机制是碱和臭氧化物反应中的压倒性过程。作为各种烯烃的臭氧分解反应的淬灭剂,涉及三乙胺的反应通常比涉及甲基硫醚的反应收率更高,并且进行速度更快。另一方面,在4Å分子筛的存在下,仲胺与单和1,1-二取代的臭氧化物反应,以高收率提供还原性胺化产物。反应混合物中甲酸铵的形成也支持了臭氧化物与胺反应中的E1cb机理。