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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1681146Generated: November 3, 2026

Dimethylformamide dimethyl acetal → N-((dimethylamino)methylene) pyrazolo(1,5-a)pyrimidine-3-carboxamide

https://huagongshe.com/reaction/1681146

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDimethylformamide dimethyl acetalHCID 78373—
ReactantPyrazolo[1,5-a]pyrimidine-3-carboxamideHCID 17382655—
Reactant4,5-Dihydropyrazolo(1,5-a)pyrimidine-3-carboxamideHCID 136067296—
ProductN-((dimethylamino)methylene) pyrazolo(1,5-a)pyrimidine-3-carboxamideHCID 54497154—
ProductN-((dimethylamino)methylene)-4,5-dihydropyrazolo(1,5-a)pyrimidine-3-carboxamideHCID 136015760—

Reaction Steps

Additional N-((dimethylamino)methylene) pyrazolo(1,5-a)pyrimidine-3-carboxamide and N-((dimethylamino)methylene)-4,5-dihydropyrazolo(1,5-a)pyrimidine-3-carboxamide products are prepared from the corresponding pyrazolo(1,5-a)pyrimidine-3-carboxamide or the 4,5-dihydropyrazolo(1,5-a)pyrimidine-3-carboxamide intermediate compounds by heating with N,N-dimethylformamide dimethyl acetal in the manner described in Examples 20-22 and are listed in Table VIII.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05169850
Source datasetuspto-grants-1992_12
ORD IDord-b537a1c056db4a2eab1a58d7b13ed741
Source noteuspto-grants-1992_12