Water → (5R)-5-[(E)-2-(4-tert-butylphenyl)-2-{5-(difluoromethoxy)-6-[(4-methoxybenzyl)oxy]-pyridin-2-yl}ethenyl]-1-(2,4-dimethoxybenzyl)pyrrolidin-2-one

HRID 70642Notes

Reaction equation

HRID 70642 reaction equation
[F:1][CH:2]([F:21])[O:3][C:4]1[C:5]([O:11][CH2:12][C:13]2[CH:18]=[CH:17][C:16]([O:19][CH3:20])=[CH:15][CH:14]=2)=[N:6][C:7](I)=[CH:8][CH:9]=1.[F-].[Cs+].[C:24]([C:28]1[CH:33]=[CH:32][C:31](/[C:34](/[Sn](CCCC)(CCCC)CCCC)=[CH:35]\[C@@H:36]2[N:40]([CH2:41][C:42]3[CH:47]=[CH:46][C:45]([O:48][CH3:49])=[CH:44][C:43]=3[O:50][CH3:51])[C:39](=[O:52])[CH2:38][CH2:37]2)=[CH:30][CH:29]=1)([CH3:27])([CH3:26])[CH3:25].O>CN(C)C=O.[Cu](I)I.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C(OCC)(=O)C>[C:24]([C:28]1[CH:33]=[CH:32][C:31](/[C:34](/[C:7]2[CH:8]=[CH:9][C:4]([O:3][CH:2]([F:21])[F:1])=[C:5]([O:11][CH2:12][C:13]3[CH:18]=[CH:17][C:16]([O:19][CH3:20])=[CH:15][CH:14]=3)[N:6]=2)=[CH:35]\[C@@H:36]2[N:40]([CH2:41][C:42]3[CH:47]=[CH:46][C:45]([O:48][CH3:49])=[CH:44][C:43]=3[O:50][CH3:51])[C:39](=[O:52])[CH2:38][CH2:37]2)=[CH:30][CH:29]=1)([CH3:27])([CH3:25])[CH3:26]

Participants

9

Reactant 4

HCID 962WaterHCID 25953Cesium fluorideHCID 58452240(5R)-5-[(E)-2-(4-tert-Butylphenyl)-2-(tributylstannyl)ethenyl]-1-(2,4-dimethoxybenzyl)pyrrolidin-2-oneHCID 584523743-(Difluoromethoxy)-6-iodo-2-[(4-methoxybenzyl)oxy]pyridine

Product 1

HCID 67400919(5R)-5-[(E)-2-(4-tert-butylphenyl)-2-{5-(difluoromethoxy)-6-[(4-methoxybenzyl)oxy]-pyridin-2-yl}ethenyl]-1-(2,4-dimethoxybenzyl)pyrrolidin-2-one

Reagents, catalysts & solvents 4

HCID 83717Copper iodideCatalystHCID 178418397HCID 178418397, compoundCatalystHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
75 °C

Procedure

3-(Difluoromethoxy)-6-iodo-2-[(4-methoxybenzyl)oxy]pyridine obtained in Reference Example 4-34 (727 mg), cesium fluoride (270 mg), copper iodide (187 mg) and tetrakis(triphenylphosphine)palladium (103 mg) were added to a solution of (5R)-5-[(E)-2-(4-tert-butylphenyl)-2-(tributylstannyl)ethenyl]-1-(2,4-dimethoxybenzyl)pyrrolidin-2-one obtained in Reference Example 4-26 (609 mg) in N,N-dimethylformamide (6 mL), and the mixture was stirred at 75° C. for two hours. Water and ethyl acetate were added to the reaction solution. After filtration through celite, the organic layer was washed with brine. The organic layer dried over anhydrous magnesium sulfate and filtered, after which the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=95:5→1:1) to give (5R)-5-[(E)-2-(4-tert-butylphenyl)-2-{5-(difluoromethoxy)-6-[(4-methoxybenzyl)oxy]-pyridin-2-yl}ethenyl]-1-(2,4-dimethoxybenzyl)pyrrolidin-2-one as a colorless gum (511 mg).

Workup

  1. filtrationAfter filtration through celite
  2. washthe organic layer was washed with brine
  3. dry with materialThe organic layer dried over anhydrous magnesium sulfate
  4. filtrationfiltered
  5. customafter which the solvent was evaporated under reduced pressure
  6. customThe residue was purified by silica gel column chromatography (hexane:ethyl acetate=95:5→1:1)

Sources & evidence

ORD record
ord-eb2768dfdc9c440abb4cf0271bdbf998
Source dataset
uspto-grants-2014_09
Patent number
US08822503B2

Reaction notes

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