Sodium Bicarbonate → 6-(4-Amino-benzyl)-1-(3-nonyl)-3-methyl-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one

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Reaction Steps

10 mg (0.037 mmol) of 5-amino-3-methyl-1-(3-nonyl)-1H-pyrazole-4-carboxamide and 45 mg (0.274 mmol) of methyl 4-aminophenylacetate are refluxed for 6 hours in 0.5 ml of a 0.5M ethanolic sodium ethoxide solution. After dichloromethane and saturated aqueous sodium hydrogen carbonate solution have been added, the phases are separated. Purification by chromatography gives 4.9 mg (35%) of a solid, Rf=0.45 (dichloromethane/methanol=15:1).

Provenance & Evidence