Which of the following is a Stephen reaction?
- A$R-C(=O)-R + 4[H] \xrightarrow{Zn-Hg/\text{conc. } HCl, \Delta} R-CH_2-R + H_2O$
- B$R-CH=O$ $\xrightarrow{H_2N-NH_2, -H_2O} R-CH=N-NH_2$ $\xrightarrow{KOH/\text{ethylene glycol}, \Delta} R-CH_3 + N_2$
- C$R-COCl \xrightarrow{H_2, Pd-BaSO_4} R-CHO + HCl$
- D$R-C \equiv N + 2[H]$ $\xrightarrow{SnCl_2/\text{dil. } HCl} R-CH=NH \cdot HCl$ $\xrightarrow{H_3O^+} R-CHO + NH_4Cl$
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Similar Questions
What is the product obtained when benzonitrile is treated with $C_6H_5MgBr$ in dry ether and then hydrolyzed?
Which among the following reactions does not correctly match with its reagent?
Which sequence represents the best synthesis of hexanal?
$CH_3CH_2CH_2CH_2CH_2CH=O$ (Hexanal)
$CH_3CH_2CH_2CH_2CH_2CH=O$ (Hexanal)
Difficult
View SolutionIn the following sequence of reactions:
$C_6H_5CH_3$ $\xrightarrow{KMnO_4} A$ $\xrightarrow{SOCl_2} B$ $\xrightarrow{H_2/Pd, BaSO_4} C$
the product $C$ is:
$C_6H_5CH_3$ $\xrightarrow{KMnO_4} A$ $\xrightarrow{SOCl_2} B$ $\xrightarrow{H_2/Pd, BaSO_4} C$
the product $C$ is:
Identify the reagent used for Rosenmund reduction.
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