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  • A solution of (-) - 1-chloro - 1 - phenylethane in toluene racemises slowly in the presence of a small amount of SbCl5 ,due to the formation of :Optio

A solution of (-) - 1-chloro - 1 - phenylethane in toluene racemises slowly in the presence of a small amount of SbCl5 ,due to the formation of :

Option: 1

free radical


Option: 2

carbanion


Option: 3

carbene


Option: 4

carbocation


Answers (1)

best_answer

As we have learnt,

Racemisation take place when an optically active species undergoes \mathrm{SN_1} at the chiral carbon. 

There is formation of a carbocation and the attack of the nucleophile can take place from both above the plane as well as below the plane to obtain an equimolar mixture of enantiomers leading to Racemisation.

1-chloro - 1 - phenylethane on treatment with SbCl5 :

 

Therefore, option(4) is correct.

Posted by

Devendra Khairwa

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