Предмет: Химия, автор: vadfokin2012

Получить П-гидроксибензойную кислоту

Ответы

Автор ответа: khursandov

Получаем парагидроксибензойную кислоту из карбида кальция:
1. CaC2 + 2H2O = C2H2 + Ca(OH)2
2. 3C2H2 = C6H6 (тримеризация)
3. C6H6 + HCl = C6H5Cl + CH3Cl = C6H5CH3
4. C6H5CH3 + KOH (спирт) = С6Н5(CH3)(OH) ( орто и пара гидрокситолуол - смесь)
5. C6H5(CH3)(OH) + CO2 = C6H5(COOH)(OH) (при температуре и высокой давлении, катализаторов получаем п-гидроксибензойную кислоту)

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