Sodium Carbonate → (1S,2R)-4'-(2-Hydroxy-1-methyl-4-pyridin-3-yl-butoxy)-2-methyl-biphenyl-4-carbonitrile

HRID 379985

Reaction equation

HRID 379985 reaction equation
[Si]([O:8][C@H:9]([CH2:22][CH2:23][C:24]1[CH:25]=[N:26][CH:27]=[CH:28][CH:29]=1)[C@H:10]([CH3:21])[O:11][C:12]1[CH:17]=[CH:16][C:15](B(O)O)=[CH:14][CH:13]=1)(C(C)(C)C)(C)C.Br[C:31]1[CH:38]=[CH:37][C:34]([C:35]#[N:36])=[CH:33][C:32]=1[CH3:39].C(=O)([O-])[O-].[Na+].[Na+]>C1(C)C=CC=CC=1.C(O)C.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>[OH:8][C@H:9]([CH2:22][CH2:23][C:24]1[CH:25]=[N:26][CH:27]=[CH:28][CH:29]=1)[C@H:10]([CH3:21])[O:11][C:12]1[CH:13]=[CH:14][C:15]([C:31]2[CH:38]=[CH:37][C:34]([C:35]#[N:36])=[CH:33][C:32]=2[CH3:39])=[CH:16][CH:17]=1

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 27374944-Bromo-3-methylbenzonitrileHCID 54020751(1S,2R)-4-[2-(tert-butyldimethylsilanyloxy)-1-methyl-4-pyridin-3-ylbutoxy]benzeneboronic acid

Product 1

HCID 57025034(1S,2R)-4'-(2-Hydroxy-1-methyl-4-pyridin-3-yl-butoxy)-2-methyl-biphenyl-4-carbonitrileYield 83.6%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolventHCID 1140TolueneSolvent

Conditions

Temperature
100 °C

Procedure

Prepared according to the method described in Example 12b) from (1S,2R)-4-[2-(tert-butyldimethylsilanyloxy)-1-methyl-4-pyridin-3-ylbutoxy]benzeneboronic acid (0.20 g, Example 11)), 4-bromo-3-methylbenzonitrile (0.20 g), 2M aqueous sodium carbonate solution (0.5 ml) and tetrakis(triphenylphosphine)palladium (0) (0.02 g) in toluene (5 ml) and ethanol (2 ml). The reaction mixture was heated at 100° C. under nitrogen for 4 hours. After cooling, the solution was concentrated under reduced pressure. Concentrated hydrochloric acid (1 ml) was added to a solution of the residue in methanol (5 ml) and the suspension stirred at room temperature for 2 hours. The mixture was concentrated under reduced pressure and the residue partitioned between diethyl ether and water. The aqueous layer was neutralised with a saturated solution of sodium bicarbonate in water and extracted with dichloromethane. The combined organics were dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure. The residue was purified by normal-phase HPLC eluting with a gradient of 0-25% ethanol in dichloromethane to give an oil (0.15 g)

Workup

  1. customPrepared
  2. temperatureAfter cooling
  3. concentrationthe solution was concentrated under reduced pressure
  4. additionConcentrated hydrochloric acid (1 ml) was added to a solution of the residue in methanol (5 ml)
  5. concentrationThe mixture was concentrated under reduced pressure
  6. customthe residue partitioned between diethyl ether and water
  7. extractionextracted with dichloromethane
  8. dry with materialThe combined organics were dried over anhydrous magnesium sulfate
  9. filtrationfiltered
  10. concentrationconcentrated under reduced pressure
  11. customThe residue was purified by normal-phase HPLC
  12. washeluting with a gradient of 0-25% ethanol in dichloromethane

Sources & evidence

ORD record
ord-6ab7a22341b0404899a2be9dd2f737aa
Source dataset
uspto-grants-2001_10
Patent number
US06300352B1

Linked notes

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