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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1382722Generated: November 1, 2026

(Triphenylphosphoranylidene)acetonitrile → Pyrido(2,3-d)pyrimidine-2,4(1H,3H)-dione, 7-amino-1,3-dimethyl-

https://huagongshe.com/reaction/1382722

Reaction equation

Participants

RoleNameHCIDCharge
Reactant(Triphenylphosphoranylidene)acetonitrileHCID 85524—
Reactant6-Amino-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carbaldehydeHCID 294688—
SolventAcetonitrileHCID 6342—
ProductPyrido(2,3-d)pyrimidine-2,4(1H,3H)-dione, 7-amino-1,3-dimethyl-HCID 304048239.5%

Reaction Steps

0.18 g of 6-amino-5-formyl-1,3-dimethyluracil and 0.45 g of cyanomethylenetriphenylphosphorane were added to 20 ml of dried acetonitrile. The solution was heated under reflux for 12 hr in a stream of argon. After cooling, the precipitated crystal was separated by filtration to give 0.08 g of 7-amino-1,3-dimethylpyrido[2,3-d]pyrimidine-2,4-dione (Compound 15).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04808587
Source datasetuspto-grants-1989_02
ORD IDord-f26206adcbe9470db5e0e32f33788dcc
Source noteuspto-grants-1989_02