Water → 2-(3,4-Dimethyl-phenyl)-6,7,8,9-tetrahydro-pyrimido[1,2-a]pyrimidin4-one

HRID 1785419Notes

Reaction equation

HRID 1785419 reaction equation
CO[C:3](=[O:15])[CH2:4][C:5]([C:7]1[CH:12]=[CH:11][C:10]([CH3:13])=[C:9]([CH3:14])[CH:8]=1)=O.Cl.[NH:17]1[CH2:22][CH2:21][CH2:20][NH:19][C:18]1=[NH:23].C(=O)([O-])[O-].[K+].[K+].O>C(O)C>[CH3:14][C:9]1[CH:8]=[C:7]([C:5]2[N:23]=[C:18]3[NH:19][CH2:20][CH2:21][CH2:22][N:17]3[C:3](=[O:15])[CH:4]=2)[CH:12]=[CH:11][C:10]=1[CH3:13]

Participants

6

Reactant 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 2758622Methyl 3-(3,4-dimethylphenyl)-3-oxopropanoateHCID 178479145HCID 178479145, compound

Product 1

HCID 1359797702-(3,4-Dimethyl-phenyl)-6,7,8,9-tetrahydro-pyrimido[1,2-a]pyrimidin4-one

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A suspension of 3-(3,4-dimethyl-phenyl)-3-oxo-propionic acid methyl ester (1.2 g, 5.8 mmol), tetrahydro-pyrimidin-2-ylideneamine hydrochloride (0.78 g, 5.8 mmol), and potassium carbonate (0.80 g, 5.8 mmol) in ethanol (20 mL) was heated to reflux for 4 h. Water (5 mL) was added to the reaction at room temperature and tan solid was collected by filtration. M+1=256.

Workup

  1. temperaturewas heated
  2. temperatureto reflux for 4 h
  3. filtrationtan solid was collected by filtration

Sources & evidence

ORD record
ord-b492962599464687b8ecb21ef57a55d3
Source dataset
uspto-grants-2009_03
Patent number
US07504403B2

Reaction notes

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