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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1161572Generated: October 28, 2026

Trifluoroacetic acid → 4-{[[1-(3-Aminopyridin-2-yl)-5-oxo-4,5-dihydro-1H-[1,2,4]triazol-3-yl]-(5-fluoro-8-methoxychroman-6-yl)methyl]amino}benzamidine trifluoroacetate

https://huagongshe.com/reaction/1161572

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactant[2-(5-Fluoro-8-methoxychroman-6-yl)-2-[4-(5-methyl-[1,2,4]oxadiazol-3-yl)phenylimino]-1-methylsulfanylethylidene]carbamic acid methyl esterHCID 72312734—
Reactant(2-{3-[2-(t-Butyldimethylsilanyloxy)ethoxy]-2-fluoro-5-methoxyphenyl}-2-[4-(5-methyl-[1,2,4]oxadiazol-3-yl)phenylimino]-1-methylsulfanylethylidene)carbamic acid methyl esterHCID 72312769—
Reactant4-({[1-(3-Aminopyridin-2-yl)-5-oxo-4,5-dihydro-1H-[1,2,4]triazol-3-yl]-[2-fluoro-3-(2-hydroxyethoxy)-5-methoxyphenyl]methyl}amino)benzamidine acetateHCID 136389281—
SolventAcetic AcidHCID 176—
Product4-{[[1-(3-Aminopyridin-2-yl)-5-oxo-4,5-dihydro-1H-[1,2,4]triazol-3-yl]-(5-fluoro-8-methoxychroman-6-yl)methyl]amino}benzamidine trifluoroacetateHCID 136389285—

Reaction Steps

The same procedure was carried out as in Examples (200b) to (200c), except that [2-(5-fluoro-8-methoxychroman-6-yl)-2-[4-(5-methyl-[1,2,4]oxadiazol-3-yl)phenylimino]-1-methylsulfanylethylidene]carbamic acid methyl ester (Example (33d)) and 0.1% trifluoroacetic acid were used instead of respectively the (2-{3-[2-(t-butyldimethylsilanyloxy)ethoxy]-2-fluoro-5-methoxyphenyl}-2-[4-(5-methyl-[1,2,4]oxadiazol-3-yl)phenylimino]-1-methylsulfanylethylidene)carbamic acid methyl ester in Example (200b) and 0.1% acetic acid in Example (200c), to give the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07816522B2
Source datasetuspto-grants-2010_10
ORD IDord-fb0a77442c504e8b952ed5b19d7de65d
Source noteuspto-grants-2010_10