PROBLEM 7.25 Question: Classify each carbocat... [FREE SOLUTION]

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Chapter 7: PROBLEM 7.25 (page 273)

Question: Classify each carbocation as $1 掳$ , $2 掳$ , $3 掳$ .
a.
b.
c.
d.

Short Answer

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Answer

a. The given carbocation is $2 掳$ .

b. The given carbocation is $1 掳$ .

c. The given carbocation is $3 掳$ .

d. The given carbocation is $2 掳$ .

Step by step solution

Carbocations

Carbocations were formerly called 鈥渃arbonium ion.鈥� These species belong to the category of reactive intermediates.

Classification of carbocations into 1° , 2° and 3°

Electron-deficient carbons linked to one carbon atom can be referred to as primary ( $1 掳$ ) carbocations. Secondary( $2 掳$ ) and tertiary( $3 掳$ ) carbocations are species where the electron-deficient carbon is joined to two and three carbon atoms, respectively.

Identification of carbocations as 1° ,2°and 3°

a. The carbocation structure consists of a carbon atom possessing a positive charge linked to two other carbon atoms. Hence, this carbocation is a $2 掳$ carbocation.

b. The carbocation structure comprises a carbon atom with a positive charge linked to another carbon atom. Hence, this carbocation is a $1 掳$ carbocation.

c. The carbocation structure contains a carbon atom comprising a positive charge linked to three other carbon atoms. Hence, this carbocation is a $3 掳$ carbocation.

d. The carbocation structure contains a carbon atom with a positive charge joined to two other carbon atoms. Hence, this carbocation is a $2 掳$ carbocation.