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For the compound given in the question, the priority order of Grignard reagent attack follows,
$\ce{R-OH > R-CO-R' > R-COOR'}$
Reason:
Acid-base neutralisation are very fast.
Carbonyl carbon is more nucleophilic than carboxylic carbon, as the latter one is stabilized by resonance.
Therefore, first alcohol is attacked and hence P is (a), then the carbonyl part is attacked and hence Q is (b).
Finally, one more mole of RMgX gets used up on the carboxyl part, hence R is not (d).
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2026-08-02
For the compound given in the question, the priority order of Grignard reagent attack follows,
$\ce{R-OH > R-CO-R' > R-COOR'}$
Reason:
Acid-base neutralisation are very fast.
Carbonyl carbon is more nucleophilic than carboxylic carbon, as the latter one is stabilized by resonance.
Therefore, first alcohol is attacked and hence P is (a), then the carbonyl part is attacked and hence Q is (b).
Finally, one more mole of RMgX gets used up on the carboxyl part, hence R is not (d).
For the compound given in the question, the priority order of Grignard reagent attack follows,
$\ce{R-OH > R-CO-R' > R-COOR'}$
Reason:
Acid-base neutralisation are very fast.
Carbonyl carbon is more nucleophilic than carboxylic carbon, as the latter one is stabilized by resonance.
Therefore, first alcohol is attacked and hence P is (a), then the carbonyl part is attacked and hence Q is (b).
Finally, one more mole of RMgX gets used up on the carboxyl part, hence R is not (d).
More
VOTE