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Pyridazine N-oxide

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Pyridazine N-oxide Basic information

Product Name:
Pyridazine N-oxide
Synonyms:
  • PYRIDAZINE-N-OXIDE
  • Pyridazine 1-oxide
  • 4-chlorine-5-Mi oxide pyridazine -3(2H)-ketone
  • Pyridazine N-oxide 97%
  • 1-oxidopyridazin-1-ium
  • Pyridazine N-oxide ISO 9001：2015 REACH
CAS:
1457-42-7
MF:
C4H4N2O
MW:
96.09
EINECS:
200-001-2
Mol File:
1457-42-7.mol
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Pyridazine N-oxide Chemical Properties

Melting point:
298-305 °C
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Safety Information

Hazard Codes 
Xn
Risk Statements 
22-37/38-41
Safety Statements 
26-39
RIDADR 
UN 3335
WGK Germany 
3
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Pyridazine N-oxide Usage And Synthesis

Uses

Coupling partner in Pd-catalyzed direct arylation reactions.

Purification Methods

Purify the oxide by distillation in a vacuum and by sublimation in vacuo. When a solution of the oxide in MeOH is treated with an aqueous solution of CuCl2, the [C4H4N2O]2—CuCl2-2H2O-complex (m 182-183o) is formed from which the oxide can be recovered . [Pollak et al. J Org Chem 35 2478 1970, Klinge et al. Recl Trav Chim, Pays Bas 95 21 1976, Ohsawa et al. Tetrahedron Lett 1979 1978, Koelsch & Gumprecht J Org Chem 23 1605 1958, Beilstein 23 III/IV 890.]

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