Acetic Acid → 2,4(1H,3H)-Pyrimidinedione, 6-amino-1-methyl-5-nitroso-3-propyl-

HRID 703113Notes

Reaction equation

HRID 703113 reaction equation
[NH2:1][C:2]1[N:7]([CH3:8])[C:6](=[O:9])[N:5]([CH2:10][CH2:11][CH3:12])[C:4](=[O:13])[CH:3]=1.[N:14]([O-])=[O:15].[Na+].C(O)(=O)C>C(O)C.O>[NH2:1][C:2]1[N:7]([CH3:8])[C:6](=[O:9])[N:5]([CH2:10][CH2:11][CH3:12])[C:4](=[O:13])[C:3]=1[N:14]=[O:15]

Participants

6

Reactant 3

HCID 176Acetic AcidHCID 116087Uracil, 6-amino-1-methyl-3-propyl-HCID 23668193Sodium Nitrite

Product 1

HCID 108461962,4(1H,3H)-Pyrimidinedione, 6-amino-1-methyl-5-nitroso-3-propyl-Yield 80%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 962WaterSolvent

Procedure

6-Amino-1-methyl-3-propyl-2,4(1H,3H)pyrimidinedione (V. Papesch and E. F. Schroeder, J. Org. Chem. 1951, 16, 1879) (5.53 g, 27.5 mmol) was dissolved in hot 95% ethanol (20 ml)-water (120 ml). Sodium nitrite (2.32 g) and glacial acetic acid (2.4 ml) were added. The resulting mixture was allowed to cool to room temperature. Orange-pink crystals were filtered off and dried at 50° C. under vacuum to give purple crystals of 6-amino-1-methyl-5-nitroso-3-propyl-2,4 (1H,3H)-pyrimidinedione (2.92 g, 80%); mp 250° dec. Analysis for (C8H12N4O3): C,45.28; H,5.70; N,26.40. Found: C,45.12; H,5.74; N,26.34.

Workup

  1. filtrationOrange-pink crystals were filtered off
  2. customdried at 50° C. under vacuum

Sources & evidence

ORD record
ord-6507e078171c47ff8a0d87c74c802903
Source dataset
uspto-grants-1991_01
Patent number
US04981857

Reaction notes

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