Potassium Phosphate, Tribasic → Methyl 3-{1-[(2,2-difluorocyclopropyl)methyl]-3-methyl-2,2-dioxido-1,3-dihydro[1,2,5]thiadiazolo[3,4-b]pyridin-5-yl}-4-methylbenzoate

HRID 515237Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 515237
Cl[C:2]1[N:7]=[C:6]2[N:8]([CH3:19])[S:9](=[O:18])(=[O:17])[N:10]([CH2:11][CH:12]3[CH2:14][C:13]3([F:16])[F:15])[C:5]2=[CH:4][CH:3]=1.[CH3:20][C:21]1[CH:30]=[CH:29][C:24]([C:25]([O:27][CH3:28])=[O:26])=[CH:23][C:22]=1B1OC(C)(C)C(C)(C)O1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].COC1C=CC=C(OC)C=1C1C=CC=CC=1P(C1CCCCC1)C1CCCCC1>C1COCC1.O.CCOC(C)=O.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[F:15][C:13]1([F:16])[CH2:14][CH:12]1[CH2:11][N:10]1[C:5]2[C:6](=[N:7][C:2]([C:22]3[CH:23]=[C:24]([CH:29]=[CH:30][C:21]=3[CH3:20])[C:25]([O:27][CH3:28])=[O:26])=[CH:3][CH:4]=2)[N:8]([CH3:19])[S:9]1(=[O:18])=[O:17]

Komponenten

9

Edukt 4

HCID 62657Potassium Phosphate, TribasicHCID 112698722-Dicyclohexylphosphino-2',6'-dimethoxybiphenylHCID 532171365-Methoxycarbonyl-2-methylphenylboronic acid pinacol esterHCID 866879055-Chloro-1-[(2,2-difluorocyclopropyl)methyl]-3-methyl-1,3-dihydro[1,2,5]thiadiazolo[3,4-b]pyridine 2,2-dioxide

Produkt 1

HCID 67411535Methyl 3-{1-[(2,2-difluorocyclopropyl)methyl]-3-methyl-2,2-dioxido-1,3-dihydro[1,2,5]thiadiazolo[3,4-b]pyridin-5-yl}-4-methylbenzoate

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 167845palladium(II) acetateKatalysatorHCID 962WaterLösungsmittelHCID 8028TetrahydrofuranLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
75 °C

Versuchsvorschrift

5-chloro-1-[(2,2-difluorocyclopropyl)methyl]-3-methyl-1,3-dihydro[1,2,5]thiadiazolo[3,4-b]pyridine 2,2-dioxide (29-1) (6.6 g, 21.3 mmol, 1.0 eq), methyl 4-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (8.8 g, 32.0 mmol, 1.5 eq), tripotassium phosphate (9.0 g, 42.6 mmol, 2.0 eq), S-Phos (875 mg, 2.1 mmol, 0.1 eq), and palladium(II) acetate (239 mg, 1.1 mmol, 0.05 eq) were combined in THF (90 mL) and water (15 mL). The resulting mixture was heated at 75° C. for 14 hours. The reaction mixture was allowed to cool to room temperature. The mixture was then diluted with EtOAc (300 mL), washed with water (100 mL) and brine (100 mL), dried over MgSO4, filtered and concentrated. The crude residue was purified by flash chromatography (330 g SiO2, 0-60% EtOAc in hexanes) to afford methyl 3-{1-[(2,2-difluorocyclopropyl)methyl]-3-methyl-2,2-dioxido-1,3-dihydro[1,2,5]thiadiazolo[3,4-b]pyridin-5-yl}-4-methylbenzoate (38-1) as a yellow solid. HRMS m/z (M+H) 424.1135 found, 424.1137 required.

Aufarbeitung

  1. temperatureto cool to room temperature
  2. washwashed with water (100 mL) and brine (100 mL)
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe crude residue was purified by flash chromatography (330 g SiO2, 0-60% EtOAc in hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-ff03e975577b4fa08c8d71e1aa2b634e
Quelldatensatz
uspto-grants-2015_08
Patentnummer
US09108937B2

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