Sodium hydride → 3,3-dimethyl-5-(2-(1-trityl-1H-imidazol-4-yl)phenoxy)pentyl 4-methylbenzenesulfonate

HRID 705428Notes

Reaction equation

HRID 705428 reaction equation
[C:1]([N:20]1[CH:24]=[C:23]([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][C:26]=2[OH:31])[N:22]=[CH:21]1)([C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[H-].[Na+].[CH3:34][C:35]1[CH:40]=[CH:39][C:38]([S:41]([O:44][CH2:45][CH2:46][C:47]([CH3:62])([CH3:61])[CH2:48][CH2:49]OS(C2C=CC(C)=CC=2)(=O)=O)(=[O:43])=[O:42])=[CH:37][CH:36]=1>CN(C=O)C.O>[CH3:34][C:35]1[CH:40]=[CH:39][C:38]([S:41]([O:44][CH2:45][CH2:46][C:47]([CH3:61])([CH3:62])[CH2:48][CH2:49][O:31][C:26]2[CH:27]=[CH:28][CH:29]=[CH:30][C:25]=2[C:23]2[N:22]=[CH:21][N:20]([C:1]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)([C:2]3[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=3)[C:8]3[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=3)[CH:24]=2)(=[O:43])=[O:42])=[CH:37][CH:36]=1

Participants

6

Reactant 3

HCID 24758Sodium hydrideHCID 113627013,3-Dimethylpentane-1,5-diyl bis(4-methylbenzenesulfonate)HCID 582940602-(1-trityl-1H-imidazol-4-yl)phenol

Product 1

HCID 582940833,3-dimethyl-5-(2-(1-trityl-1H-imidazol-4-yl)phenoxy)pentyl 4-methylbenzenesulfonateYield 64%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent2×

Procedure

To a stirred solution of 2-(1-trityl-1H-imidazol-4-yl)phenol (1.50 g, 3.73 mmol) in anhydrous DMF (10 mL) was added NaH (4.10 mmol) portion wise at 0° C. The resulting suspension was allowed to stir for 15 min. To the resulting suspension was added a solution of 3,3-dimethylpentane-1,5-diyl bis(4-methylbenzenesulfonate) (3.28 g, 7.45 mmol) in DMF (8 mL) and the mixture was allowed to stir overnight at rt. The reaction mixture was diluted with water (50 mL) and the aqueous phase was extracted with CH2Cl2 (3×50 mL). The combined organic layers were washed with brine, dried (Na2SO4) and concentrated under reduced pressure to afford a yellow oil which was purified by flash column chromatography on silica gel to afford the desired product (1.60 g, 64% yield). 1H NMR (A): 0.84 (s, 6H), 1.34 (t, 2H, J=7.32 Hz), 1.52 (t, 2H, J=7.20 Hz), 2.38 (s, 3H), 3.85 (t, 2H, J=7.32 Hz), 4.02 (t, 2H, J=7.32 Hz), 6.79 (d, 1H, J=8.19 Hz), 7.03 (t, 1H, J=7.47 Hz, 7.14-7.35 (m, 18H), 7.44 (s, 1H), 7.50 (s, 1H), 7.72-7.77 (m, 2H), 8.23 (d, 1H, J=5.64 Hz). 1H NMR (B): 1.08 (s, 6H), 1.95 (t, 4H, J=7.08 Hz), 4.16 (t, 4H, J=6.96 Hz), 6.92-7.02 (m, 4H), 7.20 (m, 2H), 7.45 (s, 2H), 7.65 (s, 2H), 7.86 (d, 2H, J=6.12 Hz), 8.19 (br s, 2H)

Workup

  1. stirringto stir overnight at rt
  2. extractionthe aqueous phase was extracted with CH2Cl2 (3×50 mL)
  3. washThe combined organic layers were washed with brine
  4. dry with materialdried (Na2SO4)
  5. concentrationconcentrated under reduced pressure
  6. customto afford a yellow oil which
  7. customwas purified by flash column chromatography on silica gel

Sources & evidence

ORD record
ord-3572d738550f4c27881e0e627844bee2
Source dataset
uspto-grants-2015_11
Patent number
US09174942B2

Reaction notes

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