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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 72186Generated: October 25, 2026

1-methyl-1H,4H,5H,6H,7H-pyrazolo(4,3-d)pyrimidine-5,7-dione → 1,3-dimethyl-1H-pyrazolo[4,3-d]pyrimidine-5,7(4H,6H)-dione

https://huagongshe.com/reaction/72186

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-methyl-1H,4H,5H,6H,7H-pyrazolo(4,3-d)pyrimidine-5,7-dioneHCID 9942242—
Reactant4-amino-1,3-dimethyl-1H-pyrazole-5-carboxamideHCID 13822925—
Product1,3-dimethyl-1H-pyrazolo[4,3-d]pyrimidine-5,7(4H,6H)-dioneHCID 13822929—

Reaction Steps

This compound was prepared in an analogous fashion to 1-methyl-1H-pyrazolo[4,3-d]pyrimidine-5,7(4H,6H)-dione, using 4-amino-1,3-dimethyl-1H-pyrazole-5-carb oxamide as the starting material. 1H NMR ((DMSO-d6, 400 MHz) δ ppm 11.02 (s, 2H), 3.97 (s, 3H), 2.20 (s, 3H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08828990B2
Source datasetuspto-grants-2014_09
ORD IDord-0ec308e2321f42a19399292574e2e552
Source noteuspto-grants-2014_09