Question

The major product H of the given reaction sequence is
CH₃ — CH₂ — CO — CH₃ □(→┴CNϴ) G □(→┴95%H₂SO₄) H
(a) CH₃ – CH = C – COOH
|
CH₃
(b) CH₃ – CH = C – CN
|
CH₃
(c) CH₃ – CH₂ – C – COOH
|
CH₃
(d) CH₃ – CH = C – CO – NH₂
|
CH₃

Answer 1

Answer:

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Answer 2

CH₃ – CH = C (CH3) – COOH is the product.

Explanation:

• The reactant is the 2 butanone.

• With the reactant as cyanide ion, the nucleophilic addition takes place.

• The product formed is CH3CH2C(CN)(CH3)O-.

• With the treatment with 95%sulphuric acid, the first they will form protonation and hydrolysis to form CH3CH2C(COOH)(CH3)OH.

• With furthur treatment and heating, dehydration takes place to form CH3-CH=C(CH3)(COOH).

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