Dimethylformamide → 1-(3-methoxy-4-((6-methoxypyridin-3-yl)methoxy)benzyl)-1H-benzo[d]imidazole-5-carbonitrile

HRID 2178308Notes

Reaction equation

I[C:2]1[CH:29]=[CH:28][C:5]2[N:6]([CH2:9][C:10]3[CH:15]=[CH:14][C:13]([O:16][CH2:17][C:18]4[CH:19]=[N:20][C:21]([O:24][CH3:25])=[CH:22][CH:23]=4)=[C:12]([O:26][CH3:27])[CH:11]=3)[CH:7]=[N:8][C:4]=2[CH:3]=1.C(=O)([O-])[O-].[K+].[K+].[CH3:36][N:37](C)C=O>[C-]#N.[Zn+2].[C-]#N.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[Pd]>[CH3:27][O:26][C:12]1[CH:11]=[C:10]([CH:15]=[CH:14][C:13]=1[O:16][CH2:17][C:18]1[CH:19]=[N:20][C:21]([O:24][CH3:25])=[CH:22][CH:23]=1)[CH2:9][N:6]1[C:5]2[CH:28]=[CH:29][C:2]([C:36]#[N:37])=[CH:3][C:4]=2[N:8]=[CH:7]1

Participants

Conditions

Temperature: 150 °C

Procedure

To a stirred solution of 5-iodo-1-(3-methoxy-4-((6-methoxypyridin-3-yl)methoxy)benzyl)-1H-benzo[d]imidazole (1.00 g, 1.99 mmol) in N,N-dimethylformamide (20 mL) was added zinc(II) cyanide (0.64 g, 3.52 mmol), tetrakis(triphenylphosphine)palladium(O) (0.46 g, 0.40 mmol) and potassium carbonate (0.63 g, 4.54 mmol). The mixture was heated to 150° C. After 4 h, the mixture was allowed to cool to room temperature and was concentrated. The residue was purified by silica gel chromatography (2% methanol/dichloromethane elute) to give 0.70 g (87%) of 1-(3-methoxy-4-((6-methoxypyridin-3-yl)methoxy)benzyl)-1H-benzo[d]imidazole-5-carbonitrile as a yellow solid.

Workup

temperatureto cool to room temperature
concentrationwas concentrated
customThe residue was purified by silica gel chromatography (2% methanol/dichloromethane elute)

Sources & evidence

ORD record: ord-407525e07ab149e8921d87fe3e948ac2
Source dataset: uspto-grants-2015_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09067914B1

Reaction notes

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