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ChemicalBook >  Product Catalog >  Pharmaceutical intermediates >  Heterocyclic compound >  Pyrimidines >  Chloropyrimidine >  4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidine

4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidine

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4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidine Basic information

Product Name:
4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidine
Synonyms:
  • 4,6-DICHLORO-1H-PYRAZOLO[3,4-D]PYRIMIDINE
  • 4,6-dichloro-2H-pyrazolo[3,4-d]pyrimidine
  • 1H-Pyrazolo[3,4-d]pyrimidine,4,6-dichloro-
  • 4,6-dichloropyrrolo[2,3-d]pyrimidine
  • 4,6-Dichloro-1H-pyrazole[3,4-D]pyriMidine
  • 4,6-Dichloropyrazolo[3,4-d]pyriMidine
  • 6-Dichloro-1H-pyrazolo[3
  • 4,6-dichloro-1H-pyrazolo[3,4-d]pP03119ine
CAS:
42754-96-1
MF:
C5H2Cl2N4
MW:
189
EINECS:
948-193-9
Product Categories:
  • Aromatics
  • Heterocycles
  • CHIRAL CHEMICALS
  • Building Blocks
  • Pyrazolo[x,x-y]pyridine
  • Heterocycle-Pyrimidine series
Mol File:
42754-96-1.mol
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4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidine Chemical Properties

Melting point:
145 °C (decomp)
Boiling point:
251.9±50.0 °C(Predicted)
Density 
2.02±0.1 g/cm3(Predicted)
storage temp. 
under inert gas (nitrogen or Argon) at 2-8°C
solubility 
DMSO (Slightly), Methanol (Slightly)
form 
solid
pka
7.90±0.20(Predicted)
color 
Off-white to yellow
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Safety Information

Hazard Codes 
T
Risk Statements 
25
Safety Statements 
45-24/25
RIDADR 
UN2811
HazardClass 
IRRITANT
HS Code 
29335990
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4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidine Usage And Synthesis

Chemical Properties

Yellow solid

Synthesis

To a solution of 2,4,6-trichloropyrimidine-5-carbaldehyde (19.0 g, 990 mmol) in methanol (300 mL) was added drop-wise a solution of hydrazine monohydrate (4.8 mL) in methanol (80 mL) at 0 °C followed by drop-wise addition of triethylamine (13 mL) in methanol (80 mL) at 0 °C. The mixture was stirred at the same temperature for 30 mm. The solvent was removed, and the residue was purified by flash chromatography to afford 4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidine (10.3 g, 62 % yield) as a yellow solid. ‘H NMR (CDC13, 400IVIHz): 11.56 (br, 1H), 8.43 (s, 1H). MS m/z 190.68 [M+1].

4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidine Preparation Products And Raw materials

Raw materials

4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidineSupplier

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