a) Illustrate the following name reactions:
i) Hell–Volhard–Zelinsky reaction ii) Wolff–Kishner reduction
b) How are the following conversions carried out?
i) ethyl cyanide to ethanoic acid ii) butan-1-ol to butanoic acid iii) methylbenzene to benzoic acid
Write chemical equations for the reactions involved.
i) Hell–Volhard–Zelinsky reaction ii) Wolff–Kishner reduction
b) How are the following conversions carried out?
i) ethyl cyanide to ethanoic acid ii) butan-1-ol to butanoic acid iii) methylbenzene to benzoic acid
Write chemical equations for the reactions involved.
Solution
(a)(i) HVZ — α-halogenation of an acid:
(ii) Wolff–Kishner:
(b)(i) Complete hydrolysis of the nitrile:
(the cyanide's carbon becomes the carboxyl; as printed the target acid is the one-carbon-longer acid).
(ii)
(iii)
(ii) Wolff–Kishner:
(b)(i) Complete hydrolysis of the nitrile:
(the cyanide's carbon becomes the carboxyl; as printed the target acid is the one-carbon-longer acid).
(ii)
(iii)
CBSE Class 12 Board · 2010 · All India · Subjective