Discuss the factors, which increases the stability of carbanion during decarboxylation in
carboxylic acids.
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Explanation:
Carbanions prefer a lesser degree of alkyl substitution. Therefore the order of stability order of alkyl carbanion is methyl>1o>2o>3o. Presence of electronegative atoms (F, Cl, Br) or electron withdrawing groups (NO2, CN, COOH, CO) close to the negatively charged carbon will stabilize the charge.
Decarboxylation is a chemical reaction that removes carboxyl group & releases CO2 . In this process release of carbon from the end of a carbon chain occurs (i.e. knocking off carbon atom). In the given reaction, decarboxylation causes the formation of methane.
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