Organic Chemistry> increasing order of enol content, CH3COCH...

increasing order of enol content, CH3COCH2COCH3, CH3COCH3, CH3CHO, CH3COCOCH3.

Samrat , 11 Years ago

Grade 12

6 Answers

Aarti Gupta

Increasing order of enol form:-
CH3CHO<CH3COCH3<CH3COCOCH3<CH3COCH2COCH3
Thanks & Regards
Aarti Gupta
askiitians Faculty

Last Activity: 11 Years ago

Samrat

Maam can you please tell me the reason for this?

Last Activity: 11 Years ago

Samrat

bta do yaar

Last Activity: 11 Years ago

UTTKARSH CHAURASIA

Larger the number of ALPHA-Hydrogen on a ketone more is enol content. This is because the ==o can be broken and --OH os formed in the presence of more Alpha-H.

(Refer topic:TAUTOMERISM: Keto enol tautomerism)

Last Activity: 9 Years ago

Saloni gupta

This is due to the increased number of alpha hydrogens associated with the carbons adjacent to the keto carbon.

As u can see in CH3CHO, there are only 3 alpha hydrogens

Similarly, in CH3 COCH3, there are 6 alpha

AND now if we see CH3COCOCH3. Since this is an electron withdrawing group and as we know electron withdrawing group increases the stability therefore it is more stable.

And CH3COCH2COCH3 is the most stable dur to conjugationor repetition of double bond and presence of electron withdrawing group in in

Last Activity: 6 Years ago

Rishi Sharma

Dear Students
Please find below the solution to your problem.

Keto enol tautomerism is possible between a ketone and an aldehyde.
The keto and enol forms are tautomers of each other.
Usually, the keto form is more stable than enol form.
Enol form is stable when there is hydrogen bonding.
It is stable when there is a carbon carbon double bond.
The more substituted alkene makes the enol bond stable.
Hence, CH3CHO<CH3COCH3<CH3COCOCH3<CH3COCH2COCH3 is the correct increasing order of enol content.
Thanks and Regards

Last Activity: 5 Years ago