Реакция #2254172

Уравнение реакции

5,7-Diacetoxy-3-acetyl-2-methylchromen-4-one

HCl

→

5,7-dihydroxy-2-methylchromen-4-one

Растворители

sodium carbonate

Условия реакции

Обработка

1. 1
   ТемператураAfter cooling
2. 2
   Температураcooled
3. 3
   ФильтрацияThe precipitate is filtered off
4. 4
   Другоеgiving 0.6 g of very pale brown powder (TM=279.9° C.)

Методика

5,7-Diacetoxy-3-acetyl-2-methylchromen-4-one is refluxed for 1 hour with 40 ml of 10% sodium carbonate solution. After cooling, the suspension is adjusted to a pH of about 6 using 2N HCl and cooled. The precipitate is filtered off, giving 0.6 g of very pale brown powder (TM=279.9° C.)

Источник