ChemicalBook CAS DataBase List 2-(METHYLTHIO)PYRAZOLO[1,5-A][1,3,5]TRIAZIN-4(3H)-ONE

2-(METHYLTHIO)PYRAZOLO[1,5-A][1,3,5]TRIAZIN-4(3H)-ONE synthesis

3synthesis methods

Product Name:2-(METHYLTHIO)PYRAZOLO[1,5-A][1,3,5]TRIAZIN-4(3H)-ONE
CAS Number:54346-18-8
Molecular formula:C6H6N4OS
Molecular Weight:182.2

34682-99-0 Synthesis

2-Thioxo-2,3-dihydropyrazolo[1,5-a][1,3,5]triazin-4(1H)-one

34682-99-0
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$62.00/100mg

74-88-4
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$15.00/10g

2-(METHYLTHIO)PYRAZOLO[1,5-A][1,3,5]TRIAZIN-4(3H)-ONE

54346-18-8
73 suppliers
$45.00/10mg

Yield:54346-18-8 92.3%

Reaction Conditions:

with sodium hydroxide in ethanol;water monomer at 15; for 1 h;

Steps:

111.3 Step 3 : 2-Methylsulfanyl-3H-pyrazolo[1,5-a][1,3,5]triazin-4-one

To a suspension of 2-thioxo-lH-pyrazolo[l,5-a][l,3,5]triazin-4-one (16 g, 90.38 mmol, 1 eq) in EtOH (120 mL) was added NaOH (7.23 g, 180.76 mmol, 2 eq) in H20 (9.6 mL), Mel (15.96 g, 112.44 mmol, 7.0 mL, 1.24 eq) was added dropwise. The mixture was stirred at 15 °C for 1 h. The mixture was acidified with IN aq. HC1 (80 mL) and EtOH was evaporated. The mixture was filtered, washed with H20 (50 mL x 2). The filter cake was dried to yield 2-methylsulfanyl-3H- pyrazolo[l,5-a][l,3,5]triazin-4-one (16 g, 83.42 mmol, 92.3% yield, 95% purity) as a white solid. NMR (400 MHz, CD3OD) δ ppm 7.74 (d, J= 2.0 Hz, 1H), 5.99 (d, J = 2.2 Hz, 1H), 2.48 (s, 3H); ES-LCMS m/z 183.2 [M+H]+.

References:

WO2018/195397,2018,A2 Location in patent:Paragraph 00733; 00736

ethyl 2H-pyrazol-3-ylaMinocarbothioylcarbaMate

34683-00-6
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inquiry

54346-18-8
73 suppliers
$45.00/10mg

References

34683-00-6
1 suppliers
inquiry

54346-18-8
73 suppliers
$45.00/10mg

References