Organic Chemistry Some Basic Principles And Techniques Ques 47
47. Arrange the following in increasing order of stability
[NEET Kar. 2013]
(A) $(CH_3)_2 \stackrel{\oplus}{C}-CH_2 CH_3$
(B) $(CH_3)_3-\stackrel{\oplus}{C}$
(C) $(CH_3)_2-\stackrel{\oplus}{C} H$
(D) $CH_3-\stackrel{\oplus}{C} H_2$
(E) $CH_3$
(a) E $<$ D $<$ C $<$ B $<$ A
(b) E $<$ D $<$ C $<$ A $<$ B
(c) D $<$ E $<$ C $<$ A $<$ B
(d) A $<$ E $<$ D $<$ C $<$ B
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Solution:
- (b) Greater the number of $e^{-}$donating alkyl groups ( + I effect), greater will be the stability of carbocations.
BETA
