Chemical Properties of Aldehydes and Ketones
Aldehydes undergo
following reactions: ?Dr Inam Ul Haq Jazbi
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1.
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Polymerization
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(Formation of Trimer)
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2.
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Reaction
with phenol
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(Bakelite formation)
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3
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Reaction
with Fehling’s solution
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(Fehling’s test)
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4.
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Reaction
with Tollen’s reagent
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(Tollen’s test/ Silver mirror test)
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5.
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Cannizaro’s
reaction
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(Formation of alcohol and acid salt)
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6.
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Aldol
condensation
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(Formation of b-hydroxy aldehyde or b-hydroxy
ketone)
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7.
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Haloform
reaction
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(trihalomethane reaction)
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8.
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Oxidation
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(Formation of carboxylic acid)
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9.
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Nucleophilic Carbonyl Addition (NCA) reaction
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a) Addition of hydrogen /Reduction / Hydrogenation
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(Formation of primary alcohol)
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b)
Addition of Grignard’s reagent
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(Formation of primary and secondary alcohol)
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c)
Addition of hydrogen cyanide
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(Formation of cyanohydrin)
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d)
Addition of alcohols
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(Formation of hemiacetal and acetal)
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e)
Addition of hydroxylamine
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(Formation of oxime)
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f)
Addition of phenyl hydrazine
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(Formation of hydrazone)
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