How is the antiseptic urotropine synthesized____________?
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Answer: C. Formaldehyde
Explanation
Urotropine is synthesized through the condensation reaction of formaldehyde with aqueous ammonia. Multiple molecules of both reactants combine to form a rigid cage structure. Water is eliminated as a byproduct during this complex multi-step organic condensation. Formaldehyde is the simplest aldehyde with high reactivity toward nitrogen nucleophiles. Urotropine is chemically known as hexamethylenetetramine with a symmetrical adamantane-like cage. Ammonia provides the nitrogen vertex atoms required for the cyclic molecular framework.
Urotropine serves as an important urinary antiseptic and a solid fuel tablet. Industrial chemistry uses it to produce synthetic resins and vulcanization accelerators. Understanding formaldehyde condensations helps manufacture various cross-linked polymers. Carboxylic acids undergo esterification or salt formation rather than urotropine synthesis. Acetaldehyde produces different condensation products due to its extended carbon chain. Ketones react via aldol condensations rather than forming hexamethylenetetramine structures.
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