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- Melamine, used as a fire retardant and a component of the writing surface of white boards, can be prepared from s-trichlorotriazine through a series of SNAr reactions with ammonia. The first substitution takes place rapidly at room temperature. The second substitution takes place near 100 °C, and the third substitution requires even higher temperature and pressure. Provide an explanation fatr this reactivity.● Provide the major organic product of the following reaction A B OC OD .COH DNIÊN 2) 8,0 coM Dpropose an efficient synthesis ОН е.
- Step 2: A hemiacetal formation has a similar mechanism to the hydrate reaction, except 1 equivalent of alcohol is added instead of water. 1² R₂ R₁ LOR3 R₁ R₂ The hemiacetal reaction is also reversible and can also be catalyzed by either acid or base. Hemiacetals are not usually isolated, except in the formation of 5- and 6-membered rings, as often seen in carbohydrate chemistry. Identify the hemiacetal formed from the intramolecular cyclization of the molecule shown. OH H OH R3OH OH OH OH CH₂OH NaOH ?how to synthesize this compound?Propose a mechanism.