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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1090296Generated: October 30, 2026

Hydrochloric Acid → HCID 178426313, compound

https://huagongshe.com/reaction/1090296

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantSodium AzideHCID 33557—
Reactant4-Imino-9-methyl-4H-pyrido[1,2-a]pyrimidine-3-carbonitrileHCID 11063074—
SolventHexamethylphosphoramideHCID 12679—
ProductHCID 178426313HCID 17842631379%

Reaction Conditions

Temperature70 °C

Reaction Steps

To 100 ml of HMPA were added 10.0 g (54.3 mmoles) of 3-cyano-4-imino-9-methyl-4H-pyrido[1,2-a]-pyrimidine and 3.53 g (54.3 mmoles) of sodium azide, and the reaction was carried out with stirring at 70° C. for 3 hours. After cooling, the reaction mixture was neutralized with diluted hydrochloric acid, and the crystals precipitated were collected by filtration to obtain 9.8 9 of light-brown power of 3-(3-methyl-2-pyridyl)amino-2-(1H-tetrazol-5-yl)-2-propenonitrile. Yield: 79%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05081243
Source datasetuspto-grants-1992_01
ORD IDord-f31d5a8b1dda4662ab87e9279406f785
Source noteuspto-grants-1992_01