Pyridine → 3-bromo-N-[2-[3-(2,2-dimethylpropanoylamino)-4-methyl-phenyl]imidazo[2,1-f]pyridazin-6-yl]benzamide

HRID 539803Notes

Reaction equation

HRID 539803 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][C:5]2=[N:8][C:9]([C:11]3[CH:12]=[CH:13][C:14]([CH3:24])=[C:15]([NH:17][C:18](=[O:23])[C:19]([CH3:22])([CH3:21])[CH3:20])[CH:16]=3)=[CH:10][N:4]2[N:3]=1.[Br:25][C:26]1[CH:27]=[C:28]([CH:32]=[CH:33][CH:34]=1)[C:29](Cl)=[O:30].N1C=CC=CC=1>CC#N>[Br:25][C:26]1[CH:27]=[C:28]([CH:32]=[CH:33][CH:34]=1)[C:29]([NH:1][C:2]1[CH:7]=[CH:6][C:5]2=[N:8][C:9]([C:11]3[CH:12]=[CH:13][C:14]([CH3:24])=[C:15]([NH:17][C:18](=[O:23])[C:19]([CH3:20])([CH3:21])[CH3:22])[CH:16]=3)=[CH:10][N:4]2[N:3]=1)=[O:30]

Participants

5

Reactant 3

HCID 1049PyridineHCID 74377Benzoyl chloride, 3-bromo-HCID 67983095N-[5-(6-aminoimidazo[2,1-f]pyridazin-2-yl)-2-methyl-phenyl]-2,2-dimethyl-propanamide

Product 1

HCID 679831683-bromo-N-[2-[3-(2,2-dimethylpropanoylamino)-4-methyl-phenyl]imidazo[2,1-f]pyridazin-6-yl]benzamideYield 42.8%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

An 8-mL vial is charged with N-[5-(6-aminoimidazo[2,1-f]pyridazin-2-yl)-2-methyl-phenyl]-2,2-dimethyl-propanamide (0.097 g, 0.3 mmol), 3-bromobenzoyl chloride (0.059 mL, 0.45 mmol), pyridine (0.073 mL), and MeCN (1.0 mL). The mixture is stirred at room temperature for 16 hours, concentrated onto celite and purified by silica gel chromatography (0-100% 1:0.1 EtOAc:MeOH in CH2Cl2) to give the title compound (0.065 g). LCMS (m/z)=506.4 and 508.4 [M+H]+, tR=2.96 min.

Workup

  1. concentrationconcentrated onto celite
  2. custompurified by silica gel chromatography (0-100% 1:0.1 EtOAc:MeOH in CH2Cl2)

Sources & evidence

ORD record
ord-9b49c023e2b647139a6026422712fbaf
Source dataset
uspto-grants-2014_10
Patent number
US08871767B2

Reaction notes

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