Diisopropylethylamine → HCID 67202699, Verbindung

HRID 85166

Reaktionsgleichung

Reaktionsgleichung von HRID 85166
[F:1][C:2]([F:13])([F:12])[C:3]1[C:8]([C:9]([OH:11])=O)=[CH:7][N:6]=[CH:5][CH:4]=1.[NH2:14][C:15]1[C:24]([NH2:25])=[CH:23][CH:22]=[CH:21][C:16]=1[C:17]([O:19][CH3:20])=[O:18].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C>CN(C=O)C.CCOC(C)=O>[NH2:14][C:15]1[C:24]([NH:25][C:9](=[O:11])[C:8]2[C:3]([C:2]([F:1])([F:13])[F:12])=[CH:4][CH:5]=[N:6][CH:7]=2)=[CH:23][CH:22]=[CH:21][C:16]=1[C:17]([O:19][CH3:20])=[O:18]

Komponenten

7

Edukt 4

HCID 81531DiisopropylethylamineHCID 5718252,3-Diaminobenzoic acid methyl esterHCID 27775493-Pyridinecarboxylic acid, 4-(trifluoromethyl)-HCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)

Produkt 1

HCID 67202699HCID 67202699, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6228DimethylformamideLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

4-(Trifluoromethyl)nicotinic acid (88; 1.00 g, 5.23 mmol) was taken up in DMF (8 mL) along with methyl 2,3-diaminobenzoate (118; 0.86 g, 5.23 mmol), HATU (2.98 g, 7.84 mmol) and DIEA (1.82 mL, 10.5 mmol). The reaction mixture was stirred at room temperature for 18 h. It was then diluted with EtOAc, washed with water, dried (Na2SO4) and concentrated under reduced pressure to afford crude methyl 2-amino-3-(4-(trifluoromethyl)nicotinamido)benzoate. This material was taken up in 5 mL of glacial acetic acid and stirred at 60° C. for 18 h. The reaction mixture was stirred at 90° C. for an additional 8 h. It was then cooled to room temperature and concentrated under reduced pressure. The resulting residue was diluted with EtOAc, washed with dilute aqueous NaHCO3, dried (Na2SO4) and concentrated under reduced pressure to afford crude methyl 2-(4-(trifluoromethyl)pyridin-3-yl)-1H-benzo[d]imidazole-4-carboxylate. This material was taken up in MeOH (8 mL) and H2O (8 mL) containing LiOH (0.4 g) and stirred at room temperature for 18 h. The reaction mixture was concentrated under reduced pressure and neutralized with 6 N HCl. The resulting solids were collected by filtration and dried to afford 570 mg of 2-(4-(trifluoromethyl)pyridin-3-yl)-1H-benzo[d]imidazole-4-carboxylic acid (35% yield from methyl 2,3-diaminobenzoate) 119. MS (ESI) calcd for C14H8F3N3O2: 307.06; found: 308 [M+H].

Aufarbeitung

  1. washwashed with water
  2. dry with materialdried (Na2SO4)
  3. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-f81df967852842778abb14a885aa6686
Quelldatensatz
uspto-grants-2014_09
Patentnummer
US08846947B2

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