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PROBLEM 7.25

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Organic Chemistry
Found in: Page 273

Short Answer

Question: Classify each carbocation as , , .

a.

b.

c.

d.

Answer

a. The given carbocation is .

b. The given carbocation is .

c. The given carbocation is .

d. The given carbocation is .

See the step by step solution

Step by Step Solution

Carbocations

Carbocations were formerly called “carbonium ion.” These species belong to the category of reactive intermediates.

Classification of carbocations into  ,  and  

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

Identification of carbocations as  

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

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

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

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

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