Complete the following reaction: [figure] [C] is .
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Answer
(3) [figure]
Solution
[A] (cyclohexanone) adds HCN to give the cyanohydrin [B].
With conc. H2SO4 on heating, the -CN group is hydrolysed to -COOH and the tertiary -OH is lost by dehydration (acid-catalysed), giving the , -unsaturated acid:
[figure]
[C] is cyclohex-1-ene-1-carboxylic acid.
Answer: (3)