Carbocations as reactive intermediates

Carbocations as reactive intermediates play an essential role in organic reactions and have been thoroughly researched 102, l0J). The individual quality of the cationic polymerization results from the reproduction of the cationic reactive intermediate in every propagation step during the addition of monomers. 

Molecular rearrangements involving carbocations as reactive intermediates are very common in organic chemistry. The first-formed carbocation, which is less stable, can rearrange by 1,2-shift of either H or alkyl group to more stable carbocation. 

As we have just seen the rate determining intermediate m the reaction of tert butyl alco hoi with hydrogen chloride is the carbocation (CH3)3C Convincing evidence from a variety of sources tells us that carbocations can exist but are relatively unstable When carbocations are involved m chemical reactions it is as reactive intermediates formed slowly m one step and consumed rapidly m the next one... 

Allylic carbocations and allylic radicals are conjugated systems involved as reactive intermediates m chemical reactions The third type of conjugated system that we will examine conjugated dienes, consists of stable molecules... 

Reactions Involving Carbocations, Carbenes, and Radicals as Reactive Intermediates... 

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