a. Write the stable tautomer form the following:

b. Explain why `alpha` methyl acetone enolises to a smaller extent than acetylacetone.
c. Why is the `(-CH_(2)-)` group in acetyl acetone
`(Me-oversetOoverset(||)C-CH_(2)-oversetO overset(||)C-Me)` called active methylene group?

Explanation

a.
b.
c.The `(-CH_(2)-)` group is acidic in natrue because these `H` atoms can be easily lost as `H^(o+)` with base, as the resulting carbanion is resonance stabilised