Exercise 4

An organic compound $\mathrm{X}$ on treatment with pyridinium chloro chromate in dichloromethane gives compound $\mathrm{Y}$. Compound $\mathrm{Y}$ reacts with ${\mathrm{I}}_2$ and alkali to form triiodomethane. The compound ${}^{\text{'}}\mathrm{X}^{\text{'}}$ is

In this reaction, ${\mathrm{CH}}_3\mathrm{CHO}+\mathrm{HCN}⟶{\mathrm{CH}}_3\mathrm{CH}\left(\mathrm{OH}\right)\mathrm{CN}\stackrel{{\mathrm{H}}_2\mathrm{O}}{\to }{\mathrm{CH}}_3\mathrm{CH}\left(\mathrm{OH}\right)\mathrm{COOH}$, an asymmetric centre is generated. The acid obtained would be:

Which one of the following, on treatment with $50\%$ aq. $\mathrm{NaOH}$, yields the corresponding alcohol and acid:

Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is _____.

Which one of the following undergoes reaction with $50\%$ sodium hydroxide solution to give the corresponding alcohol and acid?

Trichloroacetaldehyde was subjected to the Cannizzaro's reaction by using $\mathrm{NaOH}$. The mixture of the products contain sodium trichloroacetate ion and another compound. The other compound is :

The general formula ${\mathrm{C}}_{\mathrm{n}}{\mathrm{H}}_{2\mathrm{n}}{\mathrm{O}}_{\mathrm{2}}$ could be for open chain _______.

The best reagent to convert pent-3-en-2-ol into pent-3-en-2-one is –