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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 539802Generated: October 25, 2026

Trifluoroacetic acid → N-[5-(6-aminoimidazo[2,1-f]pyridazin-2-yl)-2-methyl-phenyl]-2,2-dimethyl-propanamide

https://huagongshe.com/reaction/539802

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
ReactantN-(2-methyl-5-(6-(3,4,5-trimethoxybenzylamino)imidazo[1,2-b]pyridazin-2-yl)phenyl)pivalamideHCID 67983329—
ProductN-[5-(6-aminoimidazo[2,1-f]pyridazin-2-yl)-2-methyl-phenyl]-2,2-dimethyl-propanamideHCID 6798309590.2%

Reaction Conditions

Temperature50 °C

Reaction Steps

A 40-mL vial is charged with N-(2-methyl-5-(6-(3,4,5-trimethoxybenzylamino)imidazo[1,2-b]pyridazin-2-yl)phenyl)pivalamide (0.604 g, 1.2 mmol) and TFA (5 mL) and the mixture is stirred at 50° C. for 16 hours. The reaction mixture is concentrated, taken up in CH3CN and water is added. The mixture is concentrated to form solid from aqueous solution. The mixture is frozen and water is removed on a lyophilizer to afford the title compound (0.350 g). LCMS (m/z)=324.5 [M+H]+, tR=1.96 min.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08871767B2
Source datasetuspto-grants-2014_10
ORD IDord-1b9a8b9cbf8b41479662168055907838
Source noteuspto-grants-2014_10