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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 226902Generated: October 26, 2026

6-Nitro-2H-pyrido[3,2-B][1,4]oxazin-3(4H)-one → 6-amino-2H,3H,4H-pyrido[3,2-b][1,4]oxazin-3-one

https://huagongshe.com/reaction/226902

Reaction equation

Participants

RoleNameHCIDCharge
Reactant6-Nitro-2H-pyrido[3,2-B][1,4]oxazin-3(4H)-oneHCID 22060732—
CatalystPalladiumHCID 23938—
SolventHydrochloric AcidHCID 313—
SolventMethanolHCID 887—
Product6-amino-2H,3H,4H-pyrido[3,2-b][1,4]oxazin-3-oneHCID 22060563—

Reaction Steps

6-Nitro-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one (1 g) was reduced under hydrogenolysis conditions using 10% Pd—C in methanol (50 mL) and 1N HCl solution (10 mL) at 50 psi for 2 h. The catalyst was filtered off and washed with methanol and 1N HCl solution. The filtrate was evaporated to give 6-amino-2H-pyrido[3,2-b]-1,4-oxazin-3(4H)-one.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07557210B2
Source datasetuspto-grants-2009_07
ORD IDord-76329192385848399b55c25eca67b6fc
Source noteuspto-grants-2009_07