Dimethyl Sulfoxide → HCID 21875744, compound

HRID 724075Notes

Reaction equation

HRID 724075 reaction equation
[C:1]([C:3]1[CH:22]=[CH:21][C:6]2[N:7]([C:12]3[CH:17]=[CH:16][C:15]([CH2:18][CH2:19][OH:20])=[CH:14][CH:13]=3)[C:8]([CH2:10][CH3:11])=[N:9][C:5]=2[CH:4]=1)#[N:2].CS(C)=[O:25].OO.[OH-].[Na+]>O.CO>[CH2:10]([C:8]1[N:7]([C:12]2[CH:17]=[CH:16][C:15]([CH2:18][CH2:19][OH:20])=[CH:14][CH:13]=2)[C:6]2[CH:21]=[CH:22][C:3]([C:1]([NH2:2])=[O:25])=[CH:4][C:5]=2[N:9]=1)[CH3:11]

Participants

7

Reactant 4

HCID 679Dimethyl SulfoxideHCID 784Hydrogen PeroxideHCID 14798Sodium HydroxideHCID 21876241HCID 21876241, compound

Product 1

HCID 21875744HCID 21875744, compound

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Conditions

Temperature
50 °C

Procedure

To a mixture of 2-[4-(5-cyano-2-ethyl-1H-benzimidazol-1-yl)phenyl]ethanol (step 4 of Example 82, 200 mg, 0.68 mmol), DMSO (0.06 mL, 0.82 mmol) and methanol (10 mL) was added 30% aqueous solution of hydrogen peroxide (0.12 mL, 1.0 mmol) and 0.2 M aqueous NaOH (0.06 mL). The mixture was stirred at 50° C. for 4 h, then cooled. The mixture was poured into water (50 mL) and extracted with ethyl acetate (100 mL). The organic layer was washed with 2N aqueous NaOH (50 mL) and brine (50 mL), then dried (Na2SO4), and concentrated to afford the title compound as pale yellow solids: 1H-NMR (CDCl3) δ 8.23 (1H, d, J=1.1 Hz), 7.96 (1H, br.s), 7.76 (1H, dd, J=1.1 Hz, 8.4 Hz), 7.42–7.51 (4H, m), 7.25 (1H, br.s), 7.09 (1H, d, J=8.4 Hz), 3.70 (2H, t, J=6.6 Hz), 2.85 (2H, t, J=6.9 Hz), 2.76 (2H, q, J=7.4 Hz), 1.24 (3H, t, J=7.4 Hz).

Workup

  1. temperaturecooled
  2. extractionextracted with ethyl acetate (100 mL)
  3. washThe organic layer was washed with 2N aqueous NaOH (50 mL) and brine (50 mL)
  4. dry with materialdried (Na2SO4)
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-05250b61a9424a01a4c31c2998aedda7
Source dataset
uspto-grants-2006_11
Patent number
US07141580B2

Reaction notes

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