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Cesium carbonate → 5-Cyano-3-methyl-pyridine-2-carboxylic acid [6-((3R,6R)-5-amino-3,6-dimethyl-6-trifluoromethyl-3,6-dihydro-2H-[1,4]oxazin-3-yl)-5-fluoro-pyridin-2-yl]-amide

HRID 474066
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 474066
Br[C:2]1[N:7]=[C:6]([C@:8]2([CH3:20])[CH2:13][O:12][C@@:11]([CH3:18])([C:14]([F:17])([F:16])[F:15])[C:10]([NH2:19])=[N:9]2)[C:5]([F:21])=[CH:4][CH:3]=1.[C:22]([C:24]1[CH:25]=[C:26]([CH3:33])[C:27]([C:30]([NH2:32])=[O:31])=[N:28][CH:29]=1)#[N:23].CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.C(=O)([O-])[O-].[Cs+].[Cs+]>O1CCOCC1.O.CC(OC)(C)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.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[NH2:19][C:10]1[C@:11]([CH3:18])([C:14]([F:17])([F:16])[F:15])[O:12][CH2:13][C@:8]([C:6]2[N:7]=[C:2]([NH:32][C:30]([C:27]3[C:26]([CH3:33])=[CH:25][C:24]([C:22]#[N:23])=[CH:29][N:28]=3)=[O:31])[CH:3]=[CH:4][C:5]=2[F:21])([CH3:20])[N:9]=1
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Komponenten

9

Edukt 4

HCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 666659355-Cyano-3-methyl-2-pyridinecarboxamideHCID 86668039(2R,5R)-5-(6-bromo-3-fluoro-pyridin-2-yl)-2,5-dimethyl-2-trifluoromethyl-5,6-dihydro-2H-[1,4]oxazin-3-ylamine

Produkt 1

HCID 70356221
5-Cyano-3-methyl-pyridine-2-carboxylic acid [6-((3R,6R)-5-amino-3,6-dimethyl-6-trifluoromethyl-3,6-dihydro-2H-[1,4]oxazin-3-yl)-5-fluoro-pyridin-2-yl]-amide
Ausbeute 37 %

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 9811564Bis(dibenzylideneacetone)palladiumKatalysatorHCID 962WaterLösungsmittelHCID 15413tert-Butyl methyl etherLösungsmittelHCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

A mixture of (2R,5R)-5-(6-bromo-3-fluoro-pyridin-2-yl)-2,5-dimethyl-2-trifluoromethyl-5,6-dihydro-2H-[1,4]oxazin-3-ylamine (80 mg, 0.216 mmol), 5-cyano-3-methyl-pyridine-2-carboxylic acid amide (34.8 mg, 0.216 mmol, see Intermediates Amide 1), xantphos (11.26 mg, 0.019 mmol) and cesium carbonate (99 mg, 0.303 mmol) in dioxane (2 ml) was degassed for 5 minutes with argon. Pd2(dba)3 (5.94 mg, 6.48 μmol) was added, the microwave vial was sealed and stirred at 80° C. for 18 hours. The reaction mixture was diluted with water and TBME. The organic phase was washed with brine, dried over sodium sulfate, filtered and evaporated. 173 mg orange solid. Silica gel chromatography (applied on two 20×20 cm plate, 1 mm, dichloromethane:methanol 9:1, rechromatographed with dichloromethane:methanol 95:5 with double evolution of the plates) afforded the title compound: 15 mg and 21 mg. Combined amount: 36 mg (37% yield). TLC (dichloromethane/methanol 9:1) Rf=0.53; API ES+ MS 451. LCMS RtH4=0.87 min. (100%, ES+ 451), 1H-NMR (400 MHz, CDCl3): 10.80 (br s, 1H), 8.83 (br s, 1H), 8.41 (dd, 1H), 7.93 (br s, 1H), 7.55 (t, 1H), 5.8-4.6 (very broad, 2H), 4.23 (br s, 2H), 2.83 (s, 3H), 1.75 (s, 3H), 1.66 (s, 3H).

Aufarbeitung

  1. customwas degassed for 5 minutes with argon
  2. customthe microwave vial was sealed
  3. washThe organic phase was washed with brine
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. customevaporated
  7. customrechromatographed with dichloromethane:methanol 95:5 with double evolution of the plates)

Quellen und Nachweise

ORD-Eintrag
ord-6ea0d7032c45491a9d3eb0563708a10d
Quelldatensatz
uspto-grants-2014_01
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08637508B2

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