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

HRID 483228Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 483228
[CH3:1][N:2]1[C:9]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)=[CH:8][C:6](=[O:7])[NH:5][C:3]1=[O:4]>CN(C)C=N.[Pd]>[CH3:1][N:2]1[CH:9]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[CH2:8][C:6](=[O:7])[NH:5][C:3]1=[O:4]

Komponenten

4

Edukt 1

HCID 123003501-Methyl-6-phenylpyrimidine-2,4(1H,3H)-dione

Produkt 1

HCID 130862351-Methyl-6-phenyldihydropyrimidine-2,4(1H,3H)-dione

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 23938PalladiumKatalysatorHCID 12669390N,N-DimethylmethanimidamideLösungsmittel

Versuchsvorschrift

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.

Aufarbeitung

  1. filtrationThe catalyst is then filtered
  2. customthe filtrate evaporated to a crystalline residue
  3. customThe crystallization from acetonitrile

Quellen und Nachweise

ORD-Eintrag
ord-60d995fe3bc942f9b0aa3fcc160bf651
Quelldatensatz
uspto-grants-1986_03
Patentnummer
US04578466

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