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JEE Main Chemistry question

ChemistryAminesJEE Main

The correct order of basicities of the following compounds is:

(1, acetamidine), (2, ethylamine), (3, dimethylamine), (4, acetamide)

Answer: (B)

Solution

Acetamidine (1) is exceptionally basic: protonation gives a cation whose positive charge is delocalised symmetrically over both nitrogens by resonance, a powerful stabilisation that makes amidines some of the strongest neutral organic bases, more basic even than simple alkylamines. Dimethylamine (3),

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Question ID VK-150398