Organic Chemistry Some Basic Principles and Techniques - Result Question 62

####68. Which of the following is the most stable carbocation (carbonium ion)?

[1991]

(a) CH3C+H2

(b) (CH3)2C+H

(c) (CH3)3C+

(d) C6H5C+H2

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Solution:

  1. (c) Higher the +I effect greater is stability of the species. Thus,

(CH3)3C+>(CH3)2C+H>C6H5C+H2>CH3C+H2

Also, primary benzyl carbocation have almost the same stability as 2-alkyl carbocations.



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