Tetrabutylammonium Fluoride → Methyl 3-[[6-[3-(hydroxymethyl)-1-piperidyl]-3-methyl-pyridine-2-carbonyl]amino]-2,4-dimethyl-benzoate

HRID 1427119Notes

Reaction equation

HRID 1427119 reaction equation
[Si]([O:8][CH2:9][CH:10]1[CH2:15][CH2:14][CH2:13][N:12]([C:16]2[N:21]=[C:20]([C:22]([NH:24][C:25]3[C:26]([CH3:36])=[C:27]([CH:32]=[CH:33][C:34]=3[CH3:35])[C:28]([O:30][CH3:31])=[O:29])=[O:23])[C:19]([CH3:37])=[CH:18][CH:17]=2)[CH2:11]1)(C(C)(C)C)(C)C.[N+](CCCC)(CCCC)(CCCC)CCCC.[F-]>C1COCC1>[OH:8][CH2:9][CH:10]1[CH2:15][CH2:14][CH2:13][N:12]([C:16]2[N:21]=[C:20]([C:22]([NH:24][C:25]3[C:26]([CH3:36])=[C:27]([CH:32]=[CH:33][C:34]=3[CH3:35])[C:28]([O:30][CH3:31])=[O:29])=[O:23])[C:19]([CH3:37])=[CH:18][CH:17]=2)[CH2:11]1

Participants

4

Reactant 2

HCID 2724141Tetrabutylammonium FluorideHCID 86707348Methyl 3-[[6-[3-[[tert-butyl(dimethyl)silyl]oxymethyl]-1-piperidyl]-3-methyl-pyridine-2-carbonyl]amino]-2,4-dimethyl-benzoate

Product 1

HCID 86707349Methyl 3-[[6-[3-(hydroxymethyl)-1-piperidyl]-3-methyl-pyridine-2-carbonyl]amino]-2,4-dimethyl-benzoateYield 115.1%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

To a solution of methyl 3-[[6-[3-[[tert-butyl(dimethyl)silyl]oxymethyl]-1-piperidyl]-3-methyl-pyridine-2-carbonyl]amino]-2,4-dimethyl-benzoate (0.20 g, 0.38 mmol) in THF (4 ml) is added Bu4NF 1.0 M in THF (1.5 ml) at 0° C. The reaction mixture is gradually warmed to ambient temperature. After 8 hours, the reaction mixture is diluted with ice-water and extracted with ethyl acetate. The organic layers are combined, dried over sodium sulfate, filtered, and concentrated under reduced pressure. The resulting residue is purified by flash chromatography (neutral alumina) over a gradient using 50% ethyl acetate in hexane to afford the title compound as a white solid (0.18 g, 115%). Mass spectrum (m/z): 412.2 (M+1).

Workup

  1. extractionextracted with ethyl acetate
  2. dry with materialdried over sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure
  5. customThe resulting residue is purified by flash chromatography (neutral alumina) over a gradient

Sources & evidence

ORD record
ord-2e231994c4034df9a744b4d696988668
Source dataset
uspto-grants-2015_01
Patent number
US08933098B2

Reaction notes

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