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प्रश्न
Write the reactions involved Hell-Volhard Zelinsky reaction?
उत्तर
Hell-Volhard Zelinsky reaction: Carboxylic acid having α-hydrogen are halogenated at α- position on treatment with chlorine or bromine in the presence of red phosphorous to give α-halogenated carboxylic acid.
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संबंधित प्रश्न
How is 1-nitropropane prepared from suitable oxime?
Why pKa of F-CH2-COOH is lower than that of Cl−CH2−COOH?
CH3CO2H or CH2FCO2H
Which acid of the pair shown here would you expect to be stronger?
CH2FCO2H or CH2ClCO2H
Arrange the following compounds in increasing order of their property as indicated:
CH3CH2CH(Br)COOH, CH3CH(Br)CH2COOH, (CH3)2CHCOOH, CH3CH2CH2COOH (acid strength)
Arrange the following compounds in increasing order of their property as indicated:
Benzoic acid, 4-Nitrobenzoic acid, 3, 4-Dinitrobenzoic acid, 4-Methoxybenzoic acid (acid strength)
Complete the following reaction sequence.
\[\begin{array}{cc}
\ce{O}\phantom{...............................................}\\
||\phantom{...............................................}\\
\ce{CH3 - C - CH3 ->[(i) CH3MgBr][H2O] (A) ->[Na metal][Ether] (B) ->[CH3 - Br] (C)}
\end{array}\]
Acidity of BF3 can be explained on the basis of which of the following concepts?
When propionamide reacts with Br2 in the presence of alkali the product is ______.
Describe the action of alcoholic potassium hydroxide (alc. KOH) on isopropyl bromide.
