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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2413032Generated: November 1, 2026

1-Methyl-6-phenylpyrimidine-2,4(1H,3H)-dione → 1-Methyl-6-phenyldihydropyrimidine-2,4(1H,3H)-dione

https://huagongshe.com/reaction/2413032

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-Methyl-6-phenylpyrimidine-2,4(1H,3H)-dioneHCID 12300350—
CatalystPalladiumHCID 23938—
SolventN,N-DimethylmethanimidamideHCID 12669390—
Product1-Methyl-6-phenyldihydropyrimidine-2,4(1H,3H)-dioneHCID 13086235—

Reaction Steps

A solution of 1-methyl-6-phenyluracil (0.65 g) in dimethylformamidine (15 ml) is treated with 10 percent palladium on carbon and reduced at 40 p.s.i. for 20 hours. The catalyst is then filtered and the filtrate evaporated to a crystalline residue. The crystallization from acetonitrile provides 5,6-dihydro-1-methyl-6-phenyl-2,4-pyrimidine-dione, m.p. 155°-6° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04495349
Source datasetuspto-grants-1985_01
ORD IDord-1615f67c67354f9da45a5d9066ca9163
Source noteuspto-grants-1985_01