2H-1,4-BENZOXAZIN-3(4H)-ONE Chemical Properties

Melting point:

173-175 °C(lit.)

Boiling point:

337.7±31.0 °C(Predicted)

Density 

1.244±0.06 g/cm3(Predicted)

storage temp. 

Sealed in dry,Room Temperature

solubility 

methanol: soluble25mg/mL, clear, colorless

pka

12.89±0.20(Predicted)

form 

Flakes or Powder

color 

White to yellow to tan

λmax

286nm(EtOH)(lit.)

CAS DataBase Reference

5466-88-6(CAS DataBase Reference)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36-37/39

WGK Germany 

3

RTECS 

DM3270000

HazardClass 

IRRITANT

HS Code 

29349990

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS

2H-1,4-BENZOXAZIN-3(4H)-ONE Usage And Synthesis

Chemical Properties

white to almost white crystalline powder

Uses

2H-1,4-Benzoxazin-3-one is used to prepare benzoxazinone/benzothiazinone analogs of fluconazole with antifungal and anti-Candida activities. It is used to synthesize 1,?4-?benzoxazine derivatives with vasorelaxant activities.

Synthesis Reference(s)

Synthesis, p. 851, 1984 DOI: 10.1055/s-1984-30993

General Description

2H-1,4-Benzoxazin-3(4H)-one, a benzoxazine derivative, is a heterocyclic building block for various natural and synthetic organic compounds. It has been reported as an intermediate during the biogenesis of cyclic hydoxamic acids in maize. Its standard molar enthalpy of formation and tautomerization energy of its tautomers has been evaluated by calorimetric and computational methods. It has been synthesized by reacting o-aminophenol with chloroacetyl chloride in the presence of butanone and aqueous NaHCO₃.

2H-1,4-BENZOXAZIN-3(4H)-ONE(5466-88-6)Related Product Information

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• BUTTPARK 5\07-33