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Chemistry · 2026 · 3 marks
Aldehydes, Ketones and Carboxylic AcidsChemical Reactions of Aldehydes, Ketones and Carboxylic Acids3 marksApplyshort answer
CBSE 2026 · Region 4 · Set 1 · Q23
What happens when: (a) Propanenitrile is treated with phenyl magnesium bromide followed by hydrolysis? (b) p-fluorotoluene is treated with CrO_3 in…
What happens when :
(a)
Propanenitrile is treated with phenyl magnesium bromide followed by hydrolysis?
(b)
p-fluorotoluene is treated with $\displaystyle \mathrm{CrO}_{3}$ in the presence of acetic anhydride followed by hydrolysis with aqueous acid.
(c)
Phthalic acid is treated with $\displaystyle \mathrm{NH}_{3}$ followed by heating ? Write chemical reactions in support of your answer.[]
Marking-scheme solution
(a)
$$\mathrm{CH_3-CH_2-C\equiv N} \;+\; \mathrm{C_6H_5MgBr} \;\xrightarrow[\mathrm{H_3O^+}]{\text{ether}}\; \mathrm{C_2H_5-\underset{\underset{\mathrm{C_6H_5}}{|}}{\overset{\overset{\mathrm{O}}{\parallel}}{C}}}$$
(b)
(c)
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