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

HRID 1732103Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1732103
[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-4160537650e34c018ad921db6c839db3
Quelldatensatz
uspto-grants-1986_11
Patentnummer
US04625028

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