ChemicalBook--->CAS DataBase List--->1758-98-1

1758-98-1

1758-98-1 Structure

1758-98-1 Structure
IdentificationBack Directory
[Name]

4,6-DIHYDROXY-2-METHOXYPYRIMIDINE
[CAS]

1758-98-1
[Synonyms]

2-MethoxypyriMidine-4,6-diol
4,6-Dihydroxy-2-MethoxypyiMidine
2-Methoxy-4,6-dihydroxypyriMidine
4,6-DIHYDROXY-2-METHOXYPYRIMIDINE
4(1H)-PyriMidinone, 6-hydroxy-2-Methoxy-
4(3H)-Pyrimidinone, 6-hydroxy-2-methoxy-
4(1H)-Pyrimidinone, 6-hydroxy-2-methoxy- (9CI)
4,6-DIHYDROXY-2-METHOXYPYRIMIDINE ISO 9001:2015 REACH
[Molecular Formula]

C5H6N2O3
[MDL Number]

MFCD00209660
[MOL File]

1758-98-1.mol
[Molecular Weight]

142.11
Chemical PropertiesBack Directory
[Melting point ]

193-195℃
[density ]

1.51±0.1 g/cm3(Predicted)
[storage temp. ]

Inert atmosphere,Room Temperature
[pka]

4.39±0.10(Predicted)
Safety DataBack Directory
[Symbol(GHS) ]

Exclamation Mark (GHS07)
GHS07
[Signal word ]

Warning
[Hazard statements ]

H302-H315-H319-H335
[Precautionary statements ]

P261-P305+P351+P338
[HS Code ]

2933599590
Hazard InformationBack Directory
[Synthesis]

O-Methylisourea hydrochloride

5329-33-9

Dimethyl malonate

108-59-8

4,6-DIHYDROXY-2-METHOXYPYRIMIDINE

1758-98-1

General procedure for the synthesis of 4,6-dihydroxy-2-methoxypyrimidines from O-methylisourea hydrochloride and dimethyl malonate: Step 1: Synthesis of 2-methoxy-pyrimidine-4,6-diols In a sealed tube, O-methylisourea hydrochloride (3.0 g, 27 mmol) and dimethyl malonate (3.1 mL, 27 mmol) were dissolved in a 30% w/v sodium methanol solution in methanol. The reaction mixture was heated to reflux for 4 h, followed by cooling to room temperature and allowed to stand overnight. The resulting white precipitate was collected by filtration and dried under vacuum to give 4.2 g (quantitative yield) of 4,6-dihydroxy-2-methoxypyrimidine. 1H NMR (DMSO-d6, 400 MHz) δ: 10.21 (br s, 1H), 4.09 (s, 1H), 3.65 (s, 3H).

[References]

[1] Patent: WO2007/65940, 2007, A1. Location in patent: Page/Page column 49
[2] Patent: US2012/88755, 2012, A1. Location in patent: Page/Page column 66-67
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