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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2057892Generated: October 31, 2026

Potassium Carbonate → 2-Nitrosooctahydro-2H-pyrido[1,2-a]pyrazine

https://huagongshe.com/reaction/2057892

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
ReactantSodium NitrateHCID 24268—
Reactant(+-)-1,4-Diazabicyclo[4.4.0]decaneHCID 2876391—
SolventHydrochloric AcidHCID 313—
SolventWaterHCID 962—
Product2-Nitrosooctahydro-2H-pyrido[1,2-a]pyrazineHCID 45099493—

Reaction Steps

Octahydropyrido-[1,2-a]-pyrazine (5 g) was dissolved in hydrochloric acid (5 N, 16 ml) and sodium nitrate (2.7 g) in water (10 ml) added dropwise at 0°. The solution was then heated at 60° for 30 minutes and stood at room temperature for 3 hours. It was basified, saturated with potassium carbonate and extracted with ether. The ethereal extract was dried and evaporated to give N-nitroso-octahydropyrido-[1,2-a]-pyrazine as an oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04213983
Source datasetuspto-grants-1980_07
ORD IDord-efceddec38164246b24abb76587a7529
Source noteuspto-grants-1980_07