Piperazine → N-(3-ethyl-1-((6-methylpyridin-2-yl)methyl)-1H-indazol-4-yl)-7-(piperazin-1-yl)imidazo[1,2-a]pyridine-3-carboxamide

HRID 79433

Reaction equation

F[C:2]1[CH:7]=[CH:6][N:5]2[C:8]([C:11]([NH:13][C:14]3[CH:22]=[CH:21][CH:20]=[C:19]4[C:15]=3[C:16]([CH2:31][CH3:32])=[N:17][N:18]4[CH2:23][C:24]3[CH:29]=[CH:28][CH:27]=[C:26]([CH3:30])[N:25]=3)=[O:12])=[CH:9][N:10]=[C:4]2[CH:3]=1.CN1CCCN(C)C1=O.[NH:42]1[CH2:47][CH2:46][NH:45][CH2:44][CH2:43]1>C1(C)C=CC=CC=1>[CH2:31]([C:16]1[C:15]2[C:19](=[CH:20][CH:21]=[CH:22][C:14]=2[NH:13][C:11]([C:8]2[N:5]3[CH:6]=[CH:7][C:2]([N:42]4[CH2:47][CH2:46][NH:45][CH2:44][CH2:43]4)=[CH:3][C:4]3=[N:10][CH:9]=2)=[O:12])[N:18]([CH2:23][C:24]2[CH:29]=[CH:28][CH:27]=[C:26]([CH3:30])[N:25]=2)[N:17]=1)[CH3:32]

Participants

Conditions

Temperature: 105 °C

Procedure

N-(3-Ethyl-1-((6-methylpyridin-2-yl)methyl)-1H-indazol-4-yl)-7-fluoroimidazo[1,2-a]pyridine-3-carboxamide (12 mg, 0.03 mmol; Example 74, Step A) was dissolved in toluene (0.2 mL) and 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone (DMPU) (0.1 mL) and piperazine (24 mg, 0.28 mmol) was added in one portion. The mixture was heated to 105° C. and stirred for 16 hours. The crude mixture was loaded onto a Biotage 12+ C-18 samplet and purified using a gradient of 10-65% acetonitrile/water to give N-(3-ethyl-1-((6-methylpyridin-2-yl)methyl)-1H-indazol-4-yl)-7-(piperazin-1-yl)imidazo[1,2-a]pyridine-3-carboxamide as a white solid (12 mg). MS m/z 495.3 (M+1, APCI+)

Workup

custompurified

Sources & evidence

ORD record: ord-cc73b33f81814a37879dcad40677080c
Source dataset: uspto-grants-2014_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08841455B2

Linked notes

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