Some Basic Principles Of Organic Chemistry Question 182

Question: Keto-enol tautomerism is found in [IIT-JEE 1988; MADT Bihar 1995]

Options:

A) $ H_5C_6-\overset{O}{\mathop{\overset{||}{\mathop{C}},}},-H $

B) $ H_5C_6-\overset{O}{\mathop{\overset{||}{\mathop{C}},}},-C_6H_5 $

C) $ H_5C_6-\overset{O}{\mathop{\overset{||}{\mathop{C}},}},-CH_3 $

D) $ H_5C_6-\overset{O}{\mathop{\overset{||}{\mathop{C}},}},-CH_2-\overset{O}{\mathop{\overset{||}{\mathop{C}},}},-CH_3 $

Show Answer

Answer:

Correct Answer: C

Solution:

$ \underset{\text{(Keto},\text{form)}}{\mathop{C_6H_5-\overset{O}{\mathop{\overset{||}{\mathop{C}},}},-CH_3}}and,\underset{\text{(enol form)}}{\mathop{C_6H_5-\overset{OH}{\mathop{\overset{|}{\mathop{C=}},}},}},CH_2 $

$ \underset{\text{(Keto form)}}{\mathop{C_6H_5-\overset{O}{\mathop{\overset{||}{\mathop{C}},}},-CH_2-\overset{O}{\mathop{\overset{||}{\mathop{C}},}},-CH_3}} $ and $ \underset{\text{(enol form)}}{\mathop{C_6H_5-\underset{O}{\mathop{\underset{||}{\mathop{C}},}},-CH=\underset{OH}{\mathop{\underset{|}{\mathop{C,}},}},-CH_3}}, $



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