A facile one step synthesis of 1,6 -dihydro-7H-pyrazolo[4,3-d]-pyrimidin-7-ones
2005
A general synthetic approach to pyrazolo[4,3-d]pyrimidines is reported. Aldehydes, arylideneanilines, carboxylic acids and orthoesters are used as one-carbon units for bridging the two amino functions of 4-amino-1-alkyl-3-propylpyrazole-5-carboxamides.
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