Question

Sulphamethazine is prepared by the condensation of

(A) N-acetyl sulphanilyl chloride with 2-amino 4,6-dimethyl pyridine

(B) N-acetyl sulphanilyl chloride with 2-amino 4,6-dimethyl pyrimidine

(C) N-acetyl sulphanilyl chloride with 2-amino pyridine

(D) N-acetyl sulphanilyl chloride with 2-amino pyrimidine​

Answer 1

Answer:

Sulfamethazine can be prepared by reacting acetylsulfanilyl chloride with 2-amino- 4,6-dimethylpyrimidine suspended in dry pyridine or in acetone and pyridine, followed by alkaline hydrolysis of the 2-(N4-acetylsulfanilamido)-4,6-dimethylpyrimidine; the resulting salt is neutralized with SO2.

Answer 2

Answer:

(B) N-acetyl sulphanilyl chloride with 2-amino 4,6-dimethyl pyrimidine.

Explanation:

Sulfamethazine can be prepared by reacting acetylsulfanilyl chloride with 2-amino- 4,6-dimethylpyrimidine suspended in dry pyridine or in acetone and pyridine, followed by alkaline hydrolysis of the 2-(N4-acetylsulfanilamido)-4,6-dimethylpyrimidine; the resulting salt is neutralized with SO2.

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