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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1668082Generated: October 27, 2026

Tetrahydrofuran → N-[5-({2-[(cyclopropylcarbonyl)amino]imidazo[1,2-b]pyridazin-6-yl}oxy)-2-methylphenyl]-4-methyl-1,3-oxazole-5-carboxamide

https://huagongshe.com/reaction/1668082

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTetrahydrofuranHCID 8028—
ReactantOxalyl chlorideHCID 65578—
Reactant4-Methyl-1,3-oxazole-5-carboxylic acidHCID 292311—
ReactantN-[6-(3-amino-4-methylphenoxy)imidazo[1,2-b]pyridazin-2-yl]cyclopropanecarboxamideHCID 57505476—
CatalystDimethylformamideHCID 6228—
SolventDimethylacetamideHCID 31374—
ProductN-[5-({2-[(cyclopropylcarbonyl)amino]imidazo[1,2-b]pyridazin-6-yl}oxy)-2-methylphenyl]-4-methyl-1,3-oxazole-5-carboxamideHCID 5750563085.5%

Reaction Steps

In the same manner as in Example 259 and using 4-methyl-1,3-oxazole-5-carboxylic acid (77 mg, 0.60 mmol), tetrahydrofuran (10 mL), N,N-dimethylformamide (1 drop), oxalyl chloride (62 μL, 0.72 mmol), N-[6-(3-amino-4-methylphenoxy)imidazo[1,2-b]pyridazin-2-yl]cyclopropanecarboxamide (150 mg, 0.46 mmol) and N,N-dimethylacetamide (7 mL) as starting materials, the title compound (170 mg, 83%) was obtained as a white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08044049B2
Source datasetuspto-grants-2011_10
ORD IDord-8c5d02d7b60b41b7a95a9941b42c4408
Source noteuspto-grants-2011_10