Butane → HCID 118431733, compound

HRID 2208001Notes

Reaction equation

HRID 2208001 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]([F:28])=[C:6]([CH:8]2[N:12]([C:13]3[CH:18]=[CH:17][C:16]([F:19])=[CH:15][C:14]=3[F:20])[N:11]=[C:10]([C:21]([F:27])([F:26])[C:22]([F:25])([F:24])[F:23])[CH2:9]2)[CH:7]=1.[C:29]([O:33][C:34]([N:36]1[CH2:41][CH:40]=[C:39](B2OC(C)(C)C(C)(C)O2)[CH2:38][CH2:37]1)=[O:35])([CH3:32])([CH3:31])[CH3:30].C(=O)([O-])[O-].[Na+].[Na+].CCCC>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(O)C>[F:20][C:14]1[CH:15]=[C:16]([F:19])[CH:17]=[CH:18][C:13]=1[N:12]1[CH:8]([C:6]2[CH:7]=[C:2]([C:39]3[CH2:38][CH2:37][N:36]([C:34]([O:33][C:29]([CH3:30])([CH3:31])[CH3:32])=[O:35])[CH2:41][CH:40]=3)[CH:3]=[CH:4][C:5]=2[F:28])[CH2:9][C:10]([C:21]([F:27])([F:26])[C:22]([F:25])([F:23])[F:24])=[N:11]1

Participants

7

Reactant 4

HCID 7843ButaneHCID 10340Sodium CarbonateHCID 4642098Tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridine-1-carboxylateHCID 118431774HCID 118431774, compound

Product 1

HCID 118431733HCID 118431733, compoundYield 59%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolvent

Conditions

Temperature
88 °C

Procedure

5-(5-Bromo-2-fluoro-phenyl)-1-(2,4-difluoro-phenyl)-3-pentafluoroethyl-4,5-dihydro-1H-pyrazole (500.0 mg, 1.06 mmol) prepared in Step 5 of Preparation 8, 4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-3,6-dihydro-2H-pyridin-1-carboxylic acid tert-butyl ester (26.7 mg, 1.59 mmol), Pd(PPh3)4 (123.0 mg, cat.) and a 2N sodium carbonate solution (5.0 mL) were added to a mixed solvent of ethanol (5.0 mL) and 1,2-dimethylethane (20.0 mL). The reaction mixture was stirred at 88° C. for 2 hours and then filtered through celite pad. A saturated solution of ammonium chloride was added to the filtrate, which was then extracted with ethyl acetate three times. The combined extract was washed with brine, dried on anhydrous magnesium sulfate, and then concentrated under reduced pressure to give a yellow liquid residue. The resulting residue was purified by silica gel column chromatography (eluent: ethyl acetate/n-hexane=1/15) to give 360.0 mg of the titled compound as a white liquid.

Workup

  1. filtrationfiltered through celite pad
  2. additionA saturated solution of ammonium chloride was added to the filtrate, which
  3. extractionwas then extracted with ethyl acetate three times
  4. extractionThe combined extract
  5. washwas washed with brine
  6. dry with materialdried on anhydrous magnesium sulfate
  7. concentrationconcentrated under reduced pressure
  8. customto give a yellow liquid residue
  9. customThe resulting residue was purified by silica gel column chromatography (eluent: ethyl acetate/n-hexane=1/15)

Sources & evidence

ORD record
ord-23c6adedd49241c38cec86ec3d2cadb8
Source dataset
uspto-grants-2016_06
Patent number
US09376420B2

Reaction notes

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