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Potassium Phosphate, Tribasic → Methyl 5-(5,5-dimethylcyclopent-1-enyl)-2-fluoro-4-(tetrahydro-2H-pyran-2-yloxy)benzoate

HRID 1662522
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1662522
Br[C:2]1[C:3]([O:13][CH:14]2[CH2:19][CH2:18][CH2:17][CH2:16][O:15]2)=[CH:4][C:5]([F:12])=[C:6]([CH:11]=1)[C:7]([O:9][CH3:10])=[O:8].COC1C=CC=C(OC)[C:27]=1[C:28]1[CH:29]=[CH:30][CH:31]=[CH:32][C:33]=1P(C1CCCCC1)C1CCCCC1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].CC1(C)C(B2OC(C)(C)C(C)(C)O2)=CCC1>CN(C=O)C.O.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[CH3:29][C:28]1([CH3:27])[C:33]([C:2]2[C:3]([O:13][CH:14]3[CH2:19][CH2:18][CH2:17][CH2:16][O:15]3)=[CH:4][C:5]([F:12])=[C:6]([CH:11]=2)[C:7]([O:9][CH3:10])=[O:8])=[CH:32][CH2:31][CH2:30]1
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

8

Edukt 4

HCID 62657Potassium Phosphate, TribasicHCID 112698722-Dicyclohexylphosphino-2',6'-dimethoxybiphenylHCID 574675872-(5,5-Dimethylcyclopent-1-enyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolaneHCID 57467603Methyl 5-bromo-2-fluoro-4-((tetrahydro-2H-pyran-2-yl)oxy)benzoate

Produkt 1

HCID 57467604
Methyl 5-(5,5-dimethylcyclopent-1-enyl)-2-fluoro-4-(tetrahydro-2H-pyran-2-yloxy)benzoate
Ausbeute 261,1 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 167845palladium(II) acetateKatalysatorHCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
75 °C

Versuchsvorschrift

A stirred mixture of 83.2C (10.33 g, 31.0 mmol), ground S-Phos (2.55 g, 6.21 mmol), palladium acetate (0.70 g, 3.11 mmol), and potassium phosphate, tribasic (16.49 g, 77.7 mmol) in DMF (75 mL) and water (4 mL) was purged with argon and placed vacuum and the process was repeated three times. Before heating, 2-(5,5-dimethylcyclopent-1-enyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (66.6° C.) (8.96 g, 40.4 mmol) was added via syringe, and then the mixture was heated to 75° C. After 21 hours, the reaction was cooled to room temperature, diluted with water and extracted three times with EtOAc. The combined organic layers were combined and washed twice with brine. After drying over anhydrous sodium sulfate and filtration, the organic solvent was removed under reduced pressure. The residue was purified by silica gel flash chromatography (0-10% EtOAc/hexane) to yield 83.2D (5.65 g, 52%) 1H NMR (400 MHz, CDCl3) δ ppm 7.63 (1H, d, J=8.6 Hz), 6.93 (1H, d, J=13.3 Hz), 5.55 (1H, t, J=2.3 Hz), 5.43 (1H, t, J=2.7 Hz), 3.90 (3H, s), 3.82 (1H, m), 3.67 (1H, m), 2.41 (2H, td, J=7.0, 2.3 Hz), 1.97 (5H, m), 1.79 (3H, m), 1.07 (6H, d, J=13.7 Hz).

Aufarbeitung

  1. customwater (4 mL) was purged with argon
  2. temperatureBefore heating
  3. temperaturethe reaction was cooled to room temperature
  4. extractionextracted three times with EtOAc
  5. washwashed twice with brine
  6. dry with materialAfter drying over anhydrous sodium sulfate and filtration
  7. customthe organic solvent was removed under reduced pressure
  8. customThe residue was purified by silica gel flash chromatography (0-10% EtOAc/hexane)

Quellen und Nachweise

ORD-Eintrag
ord-9d69cec76a11452ea8db04cee6826041
Quelldatensatz
uspto-grants-2011_10
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08030354B2

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