Imidazole → (2S,3R,4S,5S,6R)-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2-[4-chloro-3-[(2,3-difluoro-4-methoxy-phenyl)methyl]phenyl]-2-methoxy-tetrahydropyran-3,4,5-triol

HRID 1055570Notes

Reaction equation

HRID 1055570 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C@@:8]2([O:19][CH3:20])[C@H:13]([OH:14])[C@@H:12]([OH:15])[C@H:11]([OH:16])[C@@H:10]([CH2:17][OH:18])[O:9]2)=[CH:4][C:3]=1[CH2:21][C:22]1[CH:27]=[CH:26][C:25]([O:28][CH3:29])=[C:24]([F:30])[C:23]=1[F:31].[Si:32](Cl)([C:35]([CH3:38])([CH3:37])[CH3:36])([CH3:34])[CH3:33].N1C=CN=C1>ClCCl>[Si:32]([O:18][CH2:17][C@H:10]1[O:9][C@:8]([C:5]2[CH:6]=[CH:7][C:2]([Cl:1])=[C:3]([CH2:21][C:22]3[CH:27]=[CH:26][C:25]([O:28][CH3:29])=[C:24]([F:30])[C:23]=3[F:31])[CH:4]=2)([O:19][CH3:20])[C@H:13]([OH:14])[C@@H:12]([OH:15])[C@@H:11]1[OH:16])([C:35]([CH3:38])([CH3:37])[CH3:36])([CH3:34])[CH3:33]

Participants

5

Reactant 3

HCID 795ImidazoleHCID 28928tert-Butyldimethylsilyl chlorideHCID 86685109(2S,3R,4S,5S,6R)-2-[4-chloro-3-[(2,3-difluoro-4-methoxy-phenyl)methyl]phenyl]-6-(hydroxymethyl)-2-methoxy-tetrahydropyran-3,4,5-triol

Product 1

HCID 131736387(2S,3R,4S,5S,6R)-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2-[4-chloro-3-[(2,3-difluoro-4-methoxy-phenyl)methyl]phenyl]-2-methoxy-tetrahydropyran-3,4,5-triolYield 100.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of (2S,3R,4S,5S,6R)-2-[4-chloro-3-[(2,3-difluoro-4-methoxy-phenyl)methyl]phenyl]-6-(hydroxymethyl)-2-methoxy-tetrahydropyran-3,4,5-triol 21h (1.12 g, 2.38 mmol) in dichloromethane (20 mL) were added tert-butyldimethylsilyl chloride (0.54 g, 3.58 mmol) and imidazole (0.49 g, 7.16 mmol) in turn at room temperature. The mixture was stirred at room temperature for 3 hours. The mixture was partitioned between dichloromethane (40 mL) and water (40 mL). The organic layer was washed with saturated aqueous sodium chloride (30 mL), dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated in vacuo to give the title compound 21i as yellow oil (1.37 g, 100%).

Workup

  1. customThe mixture was partitioned between dichloromethane (40 mL) and water (40 mL)
  2. washThe organic layer was washed with saturated aqueous sodium chloride (30 mL)
  3. dry with materialdried over anhydrous sodium sulfate
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated in vacuo

Sources & evidence

ORD record
ord-d433709c48f44e6bb1ba35282583650b
Source dataset
uspto-grants-2016_07
Patent number
US09394329B2

Reaction notes

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