Ethanol → 1-{4-[2-(2-Cyclopentyl-4,6-dioxo-tetrahydro-pyran-2-yl)-ethyl]-2-fluoro-phenyl}-cyclobutanecarbonitrile

HRID 858690Notes

Reaction equation

HRID 858690 reaction equation
[CH:1]1([C:6]([OH:32])([CH2:22][C:23]2[O:24]C(C)(C)O[C:27](=[O:29])[CH:28]=2)[C:7]#[C:8][C:9]2[CH:14]=[CH:13][C:12]([C:15]3([C:19]#[N:20])[CH2:18][CH2:17][CH2:16]3)=[C:11]([F:21])[CH:10]=2)[CH2:5][CH2:4][CH2:3][CH2:2]1.C(O)C.[H][H].[OH-].[Na+]>O.[OH-].[OH-].[Pd+2].C(O)(=O)C>[CH:1]1([C:6]2([CH2:7][CH2:8][C:9]3[CH:14]=[CH:13][C:12]([C:15]4([C:19]#[N:20])[CH2:18][CH2:17][CH2:16]4)=[C:11]([F:21])[CH:10]=3)[CH2:22][C:23](=[O:24])[CH2:28][C:27](=[O:29])[O:32]2)[CH2:5][CH2:4][CH2:3][CH2:2]1

Participants

8

Reactant 4

HCID 702EthanolHCID 14798Sodium HydroxideHCID 587622991-{4-[3-Cyclopentyl-4-(2,2-dimethyl-6-oxo-6H-[1,3]dioxin-4-yl)-3-hydroxy-but-1-ynyl]-2-fluoro-phenyl}-cyclobutanecarbonitrileHCID 178418361HCID 178418361, compound

Product 1

HCID 587626051-{4-[2-(2-Cyclopentyl-4,6-dioxo-tetrahydro-pyran-2-yl)-ethyl]-2-fluoro-phenyl}-cyclobutanecarbonitrileYield 83%

Reagents, catalysts & solvents 3

HCID 9942167Palladium hydroxideCatalystHCID 176Acetic AcidSolventHCID 962WaterSolvent

Procedure

To a solution of 1-{4-[3-cyclopentyl-4-(2,2-dimethyl-6-oxo-6H-[1,3]dioxin-4-yl)-3-hydroxy-but-1-ynyl]-2-fluoro-phenyl}-cyclobutanecarbonitrile (6.0 g, 13.7 mmol) from step 3 below was added Pd(OH)2/C (2.0 g) and ethanol (100 mL). The reaction was placed under a nitrogen atmosphere using a balloon filled with hydrogen. The slurry was stirred vigorously for 18 hours. The reaction was filtered to remove all of the solids, and the liquid was concentrated to an oil. The oil was dissolved in methanol (100 mL), and solution of NaOH (1.64 g, 41 mmol) dissolved in water (30 mL). The reaction was stirred for 18 hours, and then acetic acid (1 mL) was added. The liquid was concentrated to an oil, then redissolved in CH2Cl2, and washed with 1 N HCl. The organic layer was dried over MgSO4, filtered, and then concentrated to give the desired product (4.338 g, 83%). MS (ESI): 382 (M−H+).

Workup

  1. filtrationThe reaction was filtered
  2. customto remove all of the solids
  3. concentrationthe liquid was concentrated to an oil
  4. dissolutionThe oil was dissolved in methanol (100 mL)
  5. stirringThe reaction was stirred for 18 hours
  6. concentrationThe liquid was concentrated to an oil
  7. dissolutionredissolved in CH2Cl2
  8. washwashed with 1 N HCl
  9. dry with materialThe organic layer was dried over MgSO4
  10. filtrationfiltered
  11. concentrationconcentrated

Sources & evidence

ORD record
ord-739e90d6fb5a4002b7475942a2c6a8a3
Source dataset
uspto-grants-2006_12
Patent number
US07148226B2

Reaction notes

Loading…