Methanol → 1-(((5S,7S)-3-(5-(2-(2-methoxyethoxy)propan-2-yl)pyrazin-2-yl)-7-methyl-2-oxo-1-oxa-3-azaspiro[4.5]decan-7-yl)methyl)-1H-benzo[d]imidazole-6-carbonitrile

HRID 715547Notes

Reaction equation

HRID 715547 reaction equation
[OH:1][CH2:2][CH2:3][O:4][C:5]([C:8]1[N:9]=[CH:10][C:11]([N:14]2[CH2:18][C@@:17]3([CH2:23][CH2:22][CH2:21][C@@:20]([CH2:25][N:26]4[C:30]5[CH:31]=[C:32]([C:35]#[N:36])[CH:33]=[CH:34][C:29]=5[N:28]=[CH:27]4)([CH3:24])[CH2:19]3)[O:16][C:15]2=[O:37])=[N:12][CH:13]=1)([CH3:7])[CH3:6].[H-].[Na+].[CH3:40]I.CO>CN(C)C=O.CC(O)=O>[CH3:40][O:1][CH2:2][CH2:3][O:4][C:5]([C:8]1[N:9]=[CH:10][C:11]([N:14]2[CH2:18][C@@:17]3([CH2:23][CH2:22][CH2:21][C@@:20]([CH2:25][N:26]4[C:30]5[CH:31]=[C:32]([C:35]#[N:36])[CH:33]=[CH:34][C:29]=5[N:28]=[CH:27]4)([CH3:24])[CH2:19]3)[O:16][C:15]2=[O:37])=[N:12][CH:13]=1)([CH3:7])[CH3:6]

Participants

7

Reactant 4

HCID 887MethanolHCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 712275921-(((5S,7S)-3-(5-(2-(2-hydroxyethoxy)propan-2-yl)pyrazin-2-yl)-7-methyl-2-oxo-1-oxa-3-azaspiro[4.5]decan-7-yl)methyl)-1H-benzo[d]imidazole-6-carbonitrile

Product 1

HCID 712276381-(((5S,7S)-3-(5-(2-(2-methoxyethoxy)propan-2-yl)pyrazin-2-yl)-7-methyl-2-oxo-1-oxa-3-azaspiro[4.5]decan-7-yl)methyl)-1H-benzo[d]imidazole-6-carbonitrileYield 40.3%

Reagents, catalysts & solvents 2

HCID 176Acetic AcidCatalystHCID 6228DimethylformamideSolvent

Procedure

To a solution of 1-(((5S,7S)-3-(5-(2-(2-hydroxyethoxy)propan-2-yl)pyrazin-2-yl)-7-methyl-2-oxo-1-oxa-3-azaspiro[4.5]decan-7-yl)methyl)-1H-benzo[d]imidazole-6-carbonitrile (40 mg, 0.079 mmol) in N,N-Dimethylformamide (DMF) (1 mL) was added sodium hydride (4.76 mg, 0.119 mmol) at RT. After 10 minutes, MeI (0.020 mL, 0.317 mmol) was added and stirred for an hour. To the mixture was added 0.5 mL MeOH and 2 drops 5% AcOH to buffer to pH 10, then filtered and purified by reverse phase HPLC (Waters Sunfire 30×150 mm Acetonitrile:Water 0.1% TFA 50-100%, 50 mL/min, 15 min). The product was free based with PL-HCO3 resin SPE to yield 1-(((5S,7S)-3-(5-(2-(2-methoxyethoxy)propan-2-yl)pyrazin-2-yl)-7-methyl-2-oxo-1-oxa-3-azaspiro[4.5]decan-7-yl)methyl)-1H-benzo[d]imidazole-6-carbonitrile as a white solid (16.5 mg, 39%). 1H NMR (400 MHz, DMSO-d6) δ 9.23 (d, J=1.51 Hz, 1H), 8.57 (d, J=1.51 Hz, 1H), 8.50 (s, 1H), 8.39 (d, J=0.75 Hz, 1H), 7.84 (d, J=8.53 Hz, 1H), 7.60 (dd, J=8.41, 1.38 Hz, 1H), 4.12-4.23 (m, 2H), 3.88 (dd, J=23.09, 10.29 Hz, 2H), 3.43-3.48 (m, 2H), 3.34-3.39 (m, 2H), 3.26 (s, 3H), 2.00 (d, J=13.30 Hz, 1H), 1.89 (d, J=14.31 Hz, 1H), 1.58-1.77 (m, 3H), 1.43-1.56 (m, 8H), 1.30-1.41 (m, 1H), 1.07 (s, 3H). MS (m/z) 519.3 (M+H+).

Workup

  1. filtrationfiltered
  2. custompurified by reverse phase HPLC (Waters Sunfire 30×150 mm Acetonitrile:Water 0.1% TFA 50-100%, 50 mL/min, 15 min)

Sources & evidence

ORD record
ord-3a28bd81c6374a9d8e5a2601b05d6d8f
Source dataset
uspto-grants-2015_11
Patent number
US09187464B2

Reaction notes

Loading…