Реакция #93981

Уравнение реакции

1-furfuryl-2-methyl-4-phenyl-4H-pyrazolo-[1,5-a]pyrazolo[4',3':5,6]pyrido[3,4-e]pyrimidin-5(8H)-one

diethyleneglycol dimethyl ether

selenium dioxide

→

2-Methyl-4-phenyl-4H-pyrazolo[1,5-a]pyrazolo[4',3':5,6]-pyrido[3,4-e]pyrimidin-5(8H)-one

Условия реакции

Обработка

1. 1
   ФильтрацияThe mixture is filtered hot
2. 2
   Другоеevaporated to dryness

Методика

0.01 mol. of 1-furfuryl-2-methyl-4-phenyl-4H-pyrazolo-[1,5-a]pyrazolo[4',3':5,6]pyrido[3,4-e]pyrimidin-5(8H)-one is heated in 50 ml. of diethyleneglycol dimethyl ether containing 0.01 mol. of selenium dioxide at reflux temperature with stirring for two hours. The mixture is filtered hot and evaporated to dryness. Crystalline 2-methyl-4-phenyl-4H-pyrazolo[1,5-a]pyrazolo[4',3':5,6]pyrido[3,4-e]pyrimidin-5(8H)-one remains.

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