Triethylamine → N-((R)-2,2-Dimethyl-[1,3]dioxolan-4-ylmethoxy)-2-(4-ethyl-2-fluoro-phenylamino)-3,4-difluoro-benzamide

HRID 2181482Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2181482
[CH2:1]([C:3]1[CH:8]=[CH:7][C:6]([NH:9][C:10]2[C:18]([F:19])=[C:17]([F:20])[CH:16]=[CH:15][C:11]=2[C:12]([OH:14])=O)=[C:5]([F:21])[CH:4]=1)[CH3:2].[CH3:22][C:23]1([CH3:32])[O:28][C@@H:27]([CH2:29][O:30][NH2:31])[CH2:26]C[O:24]1.C(N(CC)CC)C.F[P-](F)(F)(F)(F)F.N1(O[P+](N2CCCC2)(N2CCCC2)N2CCCC2)C2C=CC=CC=2N=N1>ClCCl>[CH3:32][C:23]1([CH3:22])[O:28][C@@H:27]([CH2:29][O:30][NH:31][C:12](=[O:14])[C:11]2[CH:15]=[CH:16][C:17]([F:20])=[C:18]([F:19])[C:10]=2[NH:9][C:6]2[CH:7]=[CH:8][C:3]([CH2:1][CH3:2])=[CH:4][C:5]=2[F:21])[CH2:26][O:24]1

Komponenten

6

Edukt 4

HCID 8471TriethylamineHCID 2724699PyBOPHCID 220256532-[(4-Ethyl-2-fluorophenyl)amino]-3,4-difluorobenzoic acidHCID 69628065(R)-O-(2,2-dimethyl-[1,3]dioxan-4-ylmethyl)-hydroxylamine

Produkt 1

HCID 86590726N-((R)-2,2-Dimethyl-[1,3]dioxolan-4-ylmethoxy)-2-(4-ethyl-2-fluoro-phenylamino)-3,4-difluoro-benzamide

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a stirring solution of the product of Example 1, Step D, 2-[(4-ethyl-2-fluorophenyl)amino]-3,4-difluorobenzoic acid (0.480 g, 1.626 mmol) in dichloromethane (25 mL) is added to the product of Example 31, Step D, (R)-O-(2,2-dimethyl-[1,3]dioxan-4-ylmethyl)-hydroxylamine (0.38 g, 2.57 mmol), triethylamine (0.54 mL, 3.85 mmol), and benzotriazole-1-yl-oxy-tris-pyrrolidino-phosphonium hexafluorophosphate (1.34 g, 2.57 mmol) and allowed to stir at ambient temperature for 90 minutes. The reaction mixture was concentrated in vacuo and the affording residue was partitioned between ethyl acetate and water. The organic layers were washed twice with saturated sodium carbonate solution and twice with brine. The organic layer was collected, dried over sodium sulfate, filtered and concentrated in vacuo. N-((R)-2,2-Dimethyl-[1,3]dioxolan-4-ylmethoxy)-2-(4-ethyl-2-fluoro-phenylamino)-3,4-difluoro-benzamide was isolated via silica column chromatography in 4:1 hexanes/ethyl acetate, then 3:1 hexanes/ethyl acetate affording a white foam (0.515 g, 56.7%).

Aufarbeitung

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. customthe affording residue was partitioned between ethyl acetate and water
  3. washThe organic layers were washed twice with saturated sodium carbonate solution and twice with brine
  4. customThe organic layer was collected
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-2b162ee876564243a6fa6c4c98df5481
Quelldatensatz
uspto-grants-2005_05
Patentnummer
US06891066B2

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