高等有机化学教案3反应机理概述.ppt

Mechanism,The order of events in going from reactantto product.An“event”is a breaking of a bond,the making of a bond,or the simultaneous making and breaking of a bond.,Hammonds Postulate,If two states,as for example,a transition state(TS)and an unstable intermediate,occurconsecutively during a reaction process andhave nearly the same energy content,theirinterconversion will involve only a smallreorganization of the molecular structures.,