Sodium Bicarbonate → HCID 135977444, compound

HRID 1964612Notes

Reaction equation

HRID 1964612 reaction equation
[N:1]1([C:5]([C:7]2[CH:36]=[CH:35][C:10]([O:11][C:12]3[CH:13]=[C:14]([C:24]4[NH:28][C:27]([C:29]5[O:30][C:31]([CH3:34])=[N:32][N:33]=5)=[CH:26][CH:25]=4)[CH:15]=[C:16]([O:18][C@@H:19]([CH3:23])[CH2:20][O:21]C)[CH:17]=3)=[C:9]([F:37])[CH:8]=2)=[O:6])[CH2:4][CH2:3][CH2:2]1.B(Br)(Br)Br.ClCCl.C(=O)([O-])O.[Na+]>ClCCl>[N:1]1([C:5]([C:7]2[CH:36]=[CH:35][C:10]([O:11][C:12]3[CH:17]=[C:16]([CH:15]=[C:14]([C:24]4[NH:28][C:27]([C:29]5[O:30][C:31]([CH3:34])=[N:32][N:33]=5)=[CH:26][CH:25]=4)[CH:13]=3)[O:18][C@@H:19]([CH3:23])[CH2:20][OH:21])=[C:9]([F:37])[CH:8]=2)=[O:6])[CH2:4][CH2:3][CH2:2]1

Participants

5

Reactant 3

HCID 516892Sodium BicarbonateHCID 22277759Boron tribromide dichloromethaneHCID 135977445HCID 135977445, compound

Product 1

HCID 135977444HCID 135977444, compoundYield 21%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

2-(5-{3-[4-(Azetidin-1-ylcarbonyl)-2-fluorophenoxy]-5-[(1S)-2-methoxy-1-methylethoxy]phenyl}-1H-pyrrol-2-yl)-5-methyl-1,3,4-oxadiazole (379.2 mg, 0.748 mmol) synthesized in Example (66i) was dissolved in dichloromethane (15 mL), and a boron tribromide/dichloromethane solution (1M, 750 μL, 0.75 mmol) was added at −78° C. under nitrogen atmosphere, followed by stirring at 0° C. for 3 hours. To the reaction solution, a saturated aqueous sodium hydrogencarbonate solution was added, and extraction was carried out with ethyl acetate. The organic layer was washed with saturated brine, and subsequently dried over sodium sulfate. The solvent was distilled off under reduced pressure, and the resulting residue was purified using silica gel column chromatography (elution solvent: methanol/dichloromethane=2%-8%) to afford the desired compound (76.9 mg, yield 21%) as a pale yellow solid.

Workup

  1. extractionextraction
  2. washThe organic layer was washed with saturated brine
  3. dry with materialsubsequently dried over sodium sulfate
  4. distillationThe solvent was distilled off under reduced pressure
  5. customthe resulting residue was purified
  6. washsilica gel column chromatography (elution solvent: methanol/dichloromethane=2%-8%)

Sources & evidence

ORD record
ord-ba4084d6ef3c4dfb997bdbcf7f55611e
Source dataset
uspto-grants-2013_04
Patent number
US08415359B2

Reaction notes

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