Dimethyl Sulfoxide → HCID 58592783, compound

HRID 642881Notes

Reaction equation

HRID 642881 reaction equation
[C:1]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[NH:15][C:14]3[CH:16]=[CH:17][CH:18]=[C:19]([N:20]4[CH2:25][CH2:24][N:23]([CH2:26][C:27]5[CH:32]=[CH:31][C:30]([N+:33]([O-:35])=[O:34])=[C:29](F)[CH:28]=5)[CH2:22][CH2:21]4)[C:13]=3[N:12]=2)=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2].CS(C)=O.[N-:41]=[N+:42]=[N-:43].[Na+]>C(OCC)(=O)C>[N:41]([C:29]1[CH:28]=[C:27]([CH:32]=[CH:31][C:30]=1[N+:33]([O-:35])=[O:34])[CH2:26][N:23]1[CH2:24][CH2:25][N:20]([C:19]2[C:13]3[N:12]=[C:11]([C:8]4[CH:9]=[CH:10][C:5]([C:1]([CH3:4])([CH3:3])[CH3:2])=[CH:6][CH:7]=4)[NH:15][C:14]=3[CH:16]=[CH:17][CH:18]=2)[CH2:21][CH2:22]1)=[N+:42]=[N-:43]

Participants

5

Reactant 3

HCID 679Dimethyl SulfoxideHCID 33557Sodium AzideHCID 585927062-(4-tert-Butyl-phenyl)-4-[4-(3-fluoro-4-nitro-benzyl)-piperazin-1-yl]-1H-benzoimidazole

Product 1

HCID 58592783HCID 58592783, compoundYield 93%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

In a round bottom flask was combined 2-(4-tert-Butyl-phenyl)-4-[4-(3-fluoro-4-nitro-benzyl)-piperazin-1-yl]-1H-benzoimidazole (0.197 g, 0.40 mMol), dimethyl sulfoxide (3 mL), and sodium azide (0.029 g, 0.44 mMol) and the mixture stirred overnight. Upon arrival the mixture was diluted with ethyl acetate (100 mL), washed with water (2×50 mL), washed with brine (50 mL), and the organics dried with magnesium sulfate and filtered. The organics were concentrated on a rotary evaporator to yield 190 mg (92% yield) of 4-[4-(3-Azido-4-nitro-benzyl)-piperazin-1-yl]-2-(4-tert-butyl-phenyl)-1H-benzoimidazole as a light yellow solid. 1H NMR (DMSO-d6): δ=12.69 (s, 1H), 8.04 (d, 2H, J=8.7 Hz), 8.01 (d, 1H, J=8.3 Hz), 7.57 (m, 1H), 7.54 (d, 2H, J=8.6 Hz), 7.39 (dd, 1H, J=8.5, 1.2 Hz), 7.03 (m, 2H), 6.50 (dd, 1H, J=5.5, 1.4 Hz), 3.70 (s, 2H), 3.60 (br s, 4H), 2.68 (br s, 4H), 1.33 (s, 9H). LC/MS (Method A), rt=1.41 mins., purity=89.8%, calculated mass=510, [M+H]+=511, [M−H]−=509.

Workup

  1. customIn a round bottom flask was combined
  2. washwashed with water (2×50 mL)
  3. washwashed with brine (50 mL)
  4. dry with materialthe organics dried with magnesium sulfate
  5. filtrationfiltered
  6. concentrationThe organics were concentrated on a rotary evaporator

Sources & evidence

ORD record
ord-cfb92ad8568f43219a4062cc457e24dd
Source dataset
uspto-grants-2010_04
Patent number
US07696210B2

Reaction notes

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