Organic Compounds Containing Halogens Question 209
Question: Which of the following order is not correct-
Options:
A) $ MeBr>Me_2CHBr> $ $ Me_3CBr>Et_3CBr( S _{N}2 ) $
B) $ PhCH_2Br>PhCHBrMe>PhCBrMe_2> $ $ PhCBrMePh( S _{N}1 ) $
C) $ MeI>MeBr>MeCl>MeF(S _{N}2) $
D) All are correct
Show Answer
Answer:
Correct Answer: B
Solution:
[b] The more is the stability of intermediate (carbonium ion), the more is the chance of $ S _{N}1 $ mechanism The intermediates obtained will be $ Ph\overset{+}{\mathop{C}}H_2(i),Ph\overset{+}{\mathop{C}}H-Me(ii),Ph\overset{+}{\mathop{C}}-Me_2(iii), $
$ Ph\overset{+}{\mathop{C}}MePh( iv ) $ . The stabilty is of the order iv > iii > ii > i.
BETA
