Water can protonate ammonia to form ammonium.
水可以使氨质子化,生成铵离子。
Under strongly acidic conditions, the carbonyl oxygen is protonated, which increases the electrophilicity of the carbonyl carbon and accelerates nucleophilic attack.
在强酸条件下,羰基氧会被质子化,从而提高羰基碳的亲电性并加快亲核进攻。