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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2272896Generated: October 31, 2026

Pyridine → HCID 72203603, compound

https://huagongshe.com/reaction/2272896

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridineHCID 1049—
Reactant1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 2723939—
ReactantN2-Methyl-5-(trifluoromethyl)pyridine-2,3-diamineHCID 2735930—
ReactantHCID 117974284HCID 117974284—
Catalyst1-HydroxybenzotriazoleHCID 75771—
SolventWaterHCID 962—
ProductHCID 72203603HCID 72203603116.2%

Reaction Conditions

Temperature80 °C

Reaction Steps

A mixture of 0.12 g of N2-methyl-5-trifluoromethylpyridine-2,3-diamine, 0.2 g of 3-ethylthio-5-trifluoromethylthiophene-2-carboxylic acid, 0.15 g of EDCI hydrochloride, 9 mg of HOBt and 3 ml of pyridine was stirred at 80° C. for 6 hours. Water was poured into the cooled reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with water and dried over anhydrous magnesium sulfate, then concentrated under reduced pressure and applied to a silica gel column chromatography to obtain 0.3 g of 2-(3-ethylthio-5-trifluoromethylthiophen-2-yl)-3-methyl-6-t rifluoromethyl-3H-imidazo[4,5,b]pyridine (Compound of Present Invention (5)).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09120792B2
Source datasetuspto-grants-2015_09
ORD IDord-c0847a3f44234fee88908b9960fac3db
Source noteuspto-grants-2015_09