Write structures of main compounds A and B ...

CBSE Class 12 Chemistry 2019 Outside Delhi Set 2 Solved Paper

Question : 9 of 27

Marks: +1, -0

Write structures of main compounds

A

and

B

in each of the following reactions:

(a)

\mathrm{C_6H_5COOH}\xrightarrow{\mathrm{PCl}_5}A\xrightarrow{\mathrm{H}_2/\mathrm{Pd}-\mathrm{BaSO}_4}B

(b)

\mathrm{CH_3CN}\xrightarrow[(ii)\,\mathrm{H_3O}^+]{(i)\,\mathrm{CH_3MgBr}}A\xrightarrow{\mathrm{Zn}(\mathrm{Hg})/\text{conc. HCl}}B

Solution:

(a)

A=\mathrm{C_6H_5COCl}

B=\mathrm{C_6H_5CHO}

(b)

A=\mathrm{CH_3COCH_3}

B=\mathrm{CH_3CH_2CH_3}

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