Tetrahydrofuran → N-[5-({2-[(cyclopropylcarbonyl)amino]imidazo[1,2-b]pyridazin-6-yl}oxy)-2-fluorophenyl]-1-ethyl-1H-pyrazole-5-carboxamide

HRID 1663800

Reaction equation

HRID 1663800 reaction equation
[CH2:1]([N:3]1[C:7]([C:8]([OH:10])=O)=[CH:6][CH:5]=[N:4]1)[CH3:2].O1CCCC1.C(Cl)(=O)C(Cl)=O.[NH2:22][C:23]1[CH:24]=[C:25]([CH:42]=[CH:43][C:44]=1[F:45])[O:26][C:27]1[CH:28]=[CH:29][C:30]2[N:31]([CH:33]=[C:34]([NH:36][C:37]([CH:39]3[CH2:41][CH2:40]3)=[O:38])[N:35]=2)[N:32]=1>CN(C)C=O.CN1CCCC1=O>[CH:39]1([C:37]([NH:36][C:34]2[N:35]=[C:30]3[CH:29]=[CH:28][C:27]([O:26][C:25]4[CH:42]=[CH:43][C:44]([F:45])=[C:23]([NH:22][C:8]([C:7]5[N:3]([CH2:1][CH3:2])[N:4]=[CH:5][CH:6]=5)=[O:10])[CH:24]=4)=[N:32][N:31]3[CH:33]=2)=[O:38])[CH2:40][CH2:41]1

Participants

7

Reactant 4

HCID 8028TetrahydrofuranHCID 65578Oxalyl chlorideHCID 5657021-Ethyl-1H-pyrazole-5-carboxylic acidHCID 57505446N-[6-(3-amino-4-fluorophenoxy)imidazo[1,2-b]pyridazin-2-yl]cyclopropanecarboxamide

Product 1

HCID 24767986N-[5-({2-[(cyclopropylcarbonyl)amino]imidazo[1,2-b]pyridazin-6-yl}oxy)-2-fluorophenyl]-1-ethyl-1H-pyrazole-5-carboxamideYield 53%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideCatalystHCID 13387N-methyl-2-pyrrolidoneSolvent

Procedure

Using 1-ethyl-1H-pyrazole-5-carboxylic acid (140 mg, 1.0 mmol), N,N-dimethylformamide (2 drops), tetrahydrofuran (10 mL), oxalyl chloride (0.172 mL, 2.0 mmol), N-methylpyrrolidone (5 mL) and N-[6-(3-amino-4-fluorophenoxy)imidazo[1,2-b]pyridazin-2-yl]cyclopropanecarboxamide (164 mg, 0.50 mmol), and in the same manner as in Example 173, the title compound (119 mg, yield 53%) was obtained. melting point 209° C.

Sources & evidence

ORD record
ord-fef58c757cf043a8860fedb4b42fef96
Source dataset
uspto-grants-2011_10
Patent number
US08034812B2

Linked notes

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