Question

The final product (III) obtained in the reaction sequence –
CH₃ - CH₂ - COOH□(→┴PCl₃ ) I
□(→┴C₆H₆/AlCl₃ )II □(→┴NH₂ - NH₂ )III

Answer 1

Answer:

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Answer 2

The final product (III) obtained in the reaction sequence is :

Reaction : CH₃ - CH₂ - COOH□(→┴PCl₃ ) I

□(→┴C₆H₆/AlCl₃ )II □(→┴NH₂ - NH₂ )III

1. CH₃ - CH₂ - COOH□(→┴PCl₃ ) I

=> PCl₃ is used as chlorinating reagent. It reacts with propanoic acid to form propanoyl chloride.

• I = CH₃ - CH₂ - COCl

2. CH₃ - CH₂ - COCl (→┴C₆H₆/AlCl₃ ) II

=> Acylation of benzene with propanoyl chloride in the presence of catalyst AlCl₃.

• II = C₆H5-CO-CH₃-CH₂

3. C₆H5-CO-CH₃-CH₂ (→┴NH₂ - NH₂ ) III

=> Wolff–Kishner reduction is given above which is used to convert carbonyl functionalities into methylene groups.

=> -C=O will get reduced by hydrazine to -CH₂

• lll = C₆H5-CH₂-CH₃-CH₂

•°• The final product (III) obtained in the reaction sequence is C₆H5-CH₂-CH₃-CH₂