Tetrahydrofuran → Methyl 3-(2-(((2-(1,1-dimethylethyl)-2'-fluoro-5'-(methyloxy)-1,1'-biphenyl-4-yl)methyl)oxy)-4-pyridinyl)propanoate

HRID 1662499

Reaction equation

HRID 1662499 reaction equation
Br[C:2]1[CH:7]=[CH:6][N:5]=[C:4]([O:8][CH2:9][C:10]2[CH:15]=[CH:14][C:13]([C:16]3[CH:21]=[C:20]([O:22][CH3:23])[CH:19]=[CH:18][C:17]=3[F:24])=[C:12]([C:25]([CH3:28])([CH3:27])[CH3:26])[CH:11]=2)[CH:3]=1.C1COCC1.[Br-].[CH2:35]([O:37][C:38](=[O:42])[CH2:39][CH2:40][Zn+])C>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].CC(P(C(C)(C)C)[C]1[CH][CH][CH][CH]1)(C)C.C1C=CC([C]2[C](C3C=CC=CC=3)[C](C3C=CC=CC=3)[C](C3C=CC=CC=3)[C]2C2C=CC=CC=2)=CC=1.[Fe]>[CH3:26][C:25]([C:12]1[CH:11]=[C:10]([CH2:9][O:8][C:4]2[CH:3]=[C:2]([CH2:40][CH2:39][C:38]([O:37][CH3:35])=[O:42])[CH:7]=[CH:6][N:5]=2)[CH:15]=[CH:14][C:13]=1[C:16]1[CH:21]=[C:20]([O:22][CH3:23])[CH:19]=[CH:18][C:17]=1[F:24])([CH3:28])[CH3:27]

Participants

6

Reactant 3

HCID 8028Tetrahydrofuran2×HCID 577066404-Bromo-2-(((2-(1,1-dimethylethyl)-2'-fluoro-5'-(methyloxy)-1,1'-biphenyl-4-yl)methyl)oxy)pyridineHCID 178471816HCID 178471816, compound

Product 1

HCID 57706116Methyl 3-(2-(((2-(1,1-dimethylethyl)-2'-fluoro-5'-(methyloxy)-1,1'-biphenyl-4-yl)methyl)oxy)-4-pyridinyl)propanoate

Reagents, catalysts & solvents 2

HCID 6505921(1E,4E)-1,5-diphenylpenta-1,4-dien-3-one; palladiumCatalystHCID 178454872HCID 178454872, compoundCatalyst

Conditions

Temperature
80 °C

Procedure

To a sealed tube containing 72.2 (0.0980 g, 0.22 mmol), bis(dibenzylideneacetone)palladium (0.0068 g, 0.012 mmol), and CTC-Q-Phos (commercially available from Strem Chemicals.) (0.0083 g, 0.0116 mmol) was added dry THF (3.000 mL, 0.22 mmol). After about 5 minutes, 3-ethoxy-3-oxopropylzinc bromide, 0.5M solution in THF (1.000 mL, 0.50 mmol) was added dropwise. After 1 hour, the mixture was heated to 80° C. and monitored with TLC and LC-MS. After 16.5 hours, the reaction was cooled to room temperature and the organic solvent was then removed under reduced pressure. The residue was purified by flash chromatography (SiO2 gel 60, eluted with 0 to 40% EtOAc in hexanes). Fractions containing the desired product were combined and concentrated to a light brown oil (0.0646 g, 63%). 1H NMR (400 MHz) (CDCl3) δ ppm 8.11 (1H, d, J=5.3 Hz), 7.65 (1H, d, J=1.6 Hz), 7.32 (1H, dd, J=7.7, 1.7 Hz), 7.07 (2H, m), 6.85 (1H, dt, J=8.9, 3.6 Hz), 6.80 (2H, m), 6.70 (1H, s), 5.41 (2H, s), 4.15 (2H, q, J=7.2 Hz), 3.79 (3H, s), 2.93 (2H, t, J=7.6 Hz), 2.64 (2H, t, J=7.7 Hz), 1.29 (12H, m).

Workup

  1. waitAfter 1 hour
  2. waitAfter 16.5 hours
  3. temperaturethe reaction was cooled to room temperature
  4. customthe organic solvent was then removed under reduced pressure
  5. customThe residue was purified by flash chromatography (SiO2 gel 60, eluted with 0 to 40% EtOAc in hexanes)
  6. additionFractions containing the desired product
  7. concentrationconcentrated to a light brown oil (0.0646 g, 63%)

Sources & evidence

ORD record
ord-6cbc49d3e69d4d93badc8cdde1cbdb35
Source dataset
uspto-grants-2011_10
Patent number
US08030354B2

Linked notes

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