Triethylamine → 1-[4-({[tert-butyl(diphenyl)silyl]oxy}methyl)pyridin-2-yl]-5-[4-(methylsulfonyl)phenyl]-6-(tetrahydro-2H-pyran-4-yl)hexane-1,4-dione

HRID 1881837Notes

Reaction equation

HRID 1881837 reaction equation
[CH3:1][S:2]([C:5]1[CH:10]=[CH:9][C:8]([CH:11]([CH2:16][CH:17]2[CH2:22][CH2:21][O:20][CH2:19][CH2:18]2)[C:12](=[O:15])[CH:13]=[CH2:14])=[CH:7][CH:6]=1)(=[O:4])=[O:3].[Si:23]([O:40][CH2:41][C:42]1[CH:47]=[CH:46][N:45]=[C:44]([CH:48]=[O:49])[CH:43]=1)([C:36]([CH3:39])([CH3:38])[CH3:37])([C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1)[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1.C(N(CC)CC)C>C(O)C.[Cl-].C([N+]1C(C)=C(CCO)SC=1)C1C=CC=CC=1.C(OCC)(=O)C>[Si:23]([O:40][CH2:41][C:42]1[CH:47]=[CH:46][N:45]=[C:44]([C:48](=[O:49])[CH2:14][CH2:13][C:12](=[O:15])[CH:11]([C:8]2[CH:7]=[CH:6][C:5]([S:2]([CH3:1])(=[O:4])=[O:3])=[CH:10][CH:9]=2)[CH2:16][CH:17]2[CH2:22][CH2:21][O:20][CH2:19][CH2:18]2)[CH:43]=1)([C:36]([CH3:38])([CH3:39])[CH3:37])([C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1)[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1

Participants

7

Reactant 3

HCID 8471TriethylamineHCID 593314224-({[Tert-butyl(diphenyl)silyl]oxy}methyl)pyridine-2-carbaldehydeHCID 684337694-[4-(methylsulfonyl)phenyl]-5-(tetrahydro-2H-pyran-4-yl)pent-1-en-3-one

Product 1

HCID 593313161-[4-({[tert-butyl(diphenyl)silyl]oxy}methyl)pyridin-2-yl]-5-[4-(methylsulfonyl)phenyl]-6-(tetrahydro-2H-pyran-4-yl)hexane-1,4-dioneYield 88%

Reagents, catalysts & solvents 3

HCID 28333523-Benzyl-5-(2-hydroxyethyl)-4-methylthiazolium chlorideCatalystHCID 702EthanolSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 4-[4-(methylsulfonyl)phenyl]-5-(tetrahydro-2H-pyran-4-yl)pent-1-en-3-one (1.00 g) in ethanol (15 mL) were added 4-({[tert-butyl(diphenyl)silyl]oxy}methyl)pyridine-2-carbaldehyde (1.40 g), 3-benzyl-5-(2-hydroxyethyl)-4-methyl-1,3-thiazol-3-ium chloride (95.0 mg) and triethylamine (190 μL), and the mixture was stirred with heating under reflux for 4 hr under argon atmosphere. After cooling to room temperature, the reaction mixture was diluted with ethyl acetate and washed with water. The ethyl acetate layer was washed with saturated brine, dried (MgSO4) and concentrated. The residue was subjected to silica gel column chromatography, and the title compound (1.90 g, yield 88%) was obtained as a brown oil from a fraction eluted with ethyl acetate-hexane (2:1, volume ratio). MS: 698 (MH+).

Workup

  1. temperaturewith heating
  2. temperatureunder reflux for 4 hr under argon atmosphere
  3. washwashed with water
  4. washThe ethyl acetate layer was washed with saturated brine
  5. dry with materialdried (MgSO4)
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-794ae779366d4f8987a384c576794ada
Source dataset
uspto-grants-2012_11
Patent number
US08318746B2

Reaction notes

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