Tetrabutylammonium Fluoride → HCID 22100711, compound

HRID 1458413Notes

Reaction equation

HRID 1458413 reaction equation
[CH3:1][C:2]1[N:6]([CH2:7][C:8]2[C:17]3[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=3)[C:11]([C:18]#[N:19])=[CH:10][CH:9]=2)[C:5]2[CH:20]=[C:21]([O:38][Si](C(C)(C)C)(C)C)[C:22]([O:24][CH:25]3[CH2:30][CH2:29][N:28]([C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32])[CH2:27][CH2:26]3)=[CH:23][C:4]=2[N:3]=1.[N+](CCCC)(CCCC)(CCCC)CCCC.[F-]>C1COCC1>[CH3:1][C:2]1[N:6]([CH2:7][C:8]2[C:17]3[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=3)[C:11]([C:18]#[N:19])=[CH:10][CH:9]=2)[C:5]2[CH:20]=[C:21]([OH:38])[C:22]([O:24][CH:25]3[CH2:30][CH2:29][N:28]([C:31]([O:33][C:34]([CH3:36])([CH3:35])[CH3:37])=[O:32])[CH2:27][CH2:26]3)=[CH:23][C:4]=2[N:3]=1

Participants

4

Reactant 2

HCID 2724141Tetrabutylammonium FluorideHCID 22100652HCID 22100652, compound

Product 1

HCID 22100711HCID 22100711, compound

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To 2-methyl-6-(tert-butyldimethylsilyl)oxy-5-(N-(tert-butoxycarbonyl)piperidin-4-yloxy)-1-(4-cyanonaphth-1-yl)methylbenzimidazole (3 g) in THF (50 mL) was added Bu4NF (4 mL, 1M)) at ambient temperature. After stirring at ambient temperature for 30 minutes the solvent was removed. The reaction was worked up between ethyl acetate and H2O. The organic layer was dried, concentrated and purified by silica gel chromatography (hexane/ethyl acetate/CH2Cl2 /methanol, gradient) to afford 2-methyl-6-hydroxy-5-(N-(tert-butoxycarbonyl)piperidin-4-yloxy)-1-(4-cyanonaphth-1-yl)methylbenzimidazole.

Workup

  1. customwas removed
  2. customThe organic layer was dried
  3. concentrationconcentrated
  4. custompurified by silica gel chromatography (hexane/ethyl acetate/CH2Cl2 /methanol, gradient)

Sources & evidence

ORD record
ord-ed1d1ab9692a4748a9c2748a6c4eb89d
Source dataset
uspto-grants-1998_12
Patent number
US05849759

Reaction notes

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