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Chemistry
Propanal on reaction with dilute sodium hydroxide forms:
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Q. Propanal on reaction with dilute sodium hydroxide forms:
KEAM
KEAM 2000
A
$ C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}CHO $
B
$ C{{H}_{3}}C{{H}_{2}}CH(OH)C{{H}_{2}}C{{H}_{2}}CHO $
C
$ C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}CH(OH)C{{H}_{2}}CHO $
D
$ C{{H}_{3}}C{{H}_{2}}CH(OH)CH(C{{H}_{3}})CHO $
E
$ C{{H}_{3}}C{{H}_{2}}COOH $
Solution:
Propanal having a-hydrogen atom undergo aldol condensation in presence ofdil. base like $ NaOH $ . $ C{{H}_{3}}-C{{H}_{2}}CHO+C{{H}_{3}}-\overset{\alpha }{\mathop{C}}\,{{H}_{2}}CHO $ $ \xrightarrow[NaOH]{dill.}C{{H}_{3}}-C{{H}_{2}}-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{CH}}\,-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{CH}}\,-CHO $