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QNEET-2013-Ch-1458: NEET 2013 Chemistry - Class 12 NEET-2013-Ch-1458 Solution: The order of stability of the following tautomeric compounds is …
The order of stability of the following tautomeric compounds is II > I > III II > III > I I > II > III III > II > I
Multiple Choice Options
- A II > I > III
- B II > III > I
- C I > II > III
- D III > II > I
Step-by-Step Verified Solution
Enolic form predominates in compounds
containing two carbonyl groups separated by a
�CH 2
group. This is due to following two
factors.
(i) Presence of conjugation which increases
stability.
(ii) Formation of intramolecular hydrogen
bond between enolic hydroxyl group and
second carbonyl group which leads to
stablisation of the molecule.
Hence the correct answer is III > II > I