Consider the following statements regarding keto-enol tautomerism. Substituent g

Question

Consider the following statements regarding keto-enol tautomerism. Substituent groups R and R" are on the carbonyl carbons of the ß-diketonates and the R' group is on carbon in between them. Determine whether each statement is true or false. Intramolecular hydrogen-bonding and conjugation increase the stability of the keto form of B- diketonates. Bulky R and R" groups favor the keto form of B-diketonates. Steric hinderance makes the enol form favored for B-diketonates with bulky R' groups. The enol/keto equilibrium constant is independent of solute-solvent interactions.

Explanation / Answer

1) False beacuse hydrogen bonding take place only in enol form.

2) True beacuse they restrict the approch of base to the acidic proton, as a result no enol is formed.

3) False beacuse if R' is bulkier then base do not reach to the acidic proton, i.e. no enol formation.

4) False it will be depand upon solute solvent intraction.

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