3-(Trifluoromethyl)benzoyl chloride → N-[2-chloro-5-({2-[(cyclopropylcarbonyl)amino]imidazo[1,2-b]pyridazin-6-yl}oxy)phenyl]-3-(trifluoromethyl)benzamide

HRID 2391183Notes

Reaction equation

[NH2:1][C:2]1[CH:3]=[C:4]([CH:21]=[CH:22][C:23]=1[Cl:24])[O:5][C:6]1[CH:7]=[CH:8][C:9]2[N:10]([CH:12]=[C:13]([NH:15][C:16]([CH:18]3[CH2:20][CH2:19]3)=[O:17])[N:14]=2)[N:11]=1.[F:25][C:26]([F:37])([F:36])[C:27]1[CH:28]=[C:29]([CH:33]=[CH:34][CH:35]=1)[C:30](Cl)=[O:31].C(=O)([O-])O.[Na+]>CN1CCCC1=O>[Cl:24][C:23]1[CH:22]=[CH:21][C:4]([O:5][C:6]2[CH:7]=[CH:8][C:9]3[N:10]([CH:12]=[C:13]([NH:15][C:16]([CH:18]4[CH2:20][CH2:19]4)=[O:17])[N:14]=3)[N:11]=2)=[CH:3][C:2]=1[NH:1][C:30](=[O:31])[C:29]1[CH:33]=[CH:34][CH:35]=[C:27]([C:26]([F:25])([F:36])[F:37])[CH:28]=1

Participants

Conditions

Temperature: 50 °C

Procedure

A mixture of N-[6-(3-amino-4-chlorophenoxy)imidazo[1,2-b]pyridazin-2-yl]cyclopropanecarboxamide (103 mg, 0.30 mmol), 3-(trifluoromethyl)benzoyl chloride (75 mg, 0.36 mmol) and N-methylpyrrolidone (3.0 mL) was heated to 50° C., and the mixture was stirred for 10 min. The reaction mixture was poured into saturated aqueous sodium hydrogencarbonate solution, and extracted with ethyl acetate. The extract was dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (hexane/ethyl acetate=1/19→ethyl acetate) to give the title compound (131 mg, 85%) as a white powder.

Workup

extractionextracted with ethyl acetate
dry with materialThe extract was dried over anhydrous magnesium sulfate
customThe solvent was evaporated under reduced pressure
customthe residue was purified by silica gel column chromatography (hexane/ethyl acetate=1/19→ethyl acetate)

Sources & evidence

ORD record: ord-3b057d9df5784a54940f5f1fd76f6f66
Source dataset: uspto-grants-2012_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08273741B2

Reaction notes

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