Hydrochloric Acid → Selumetinib

HRID 216533Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 216533
Cl.C([O:4][CH2:5][CH2:6][O:7][NH:8][C:9]([C:11]1[C:20]([NH:21][C:22]2[CH:27]=[CH:26][C:25]([Br:28])=[CH:24][C:23]=2[Cl:29])=[C:19]([F:30])[C:14]2[N:15]=[CH:16][N:17]([CH3:18])[C:13]=2[CH:12]=1)=[O:10])=C>C(O)C>[OH:4][CH2:5][CH2:6][O:7][NH:8][C:9]([C:11]1[C:20]([NH:21][C:22]2[CH:27]=[CH:26][C:25]([Br:28])=[CH:24][C:23]=2[Cl:29])=[C:19]([F:30])[C:14]2[N:15]=[CH:16][N:17]([CH3:18])[C:13]=2[CH:12]=1)=[O:10]

Komponenten

4

Edukt 2

HCID 313Hydrochloric AcidHCID 707006695-((4-Bromo-2-chlorophenyl)amino)-4-fluoro-1-methyl-N-(2-(vinyloxy)ethoxy)-1H-benzo[d]imidazole-6-carboxamide

Produkt 1

HCID 10127622SelumetinibAusbeute 102,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

Hydrochloric acid (14 mL, 1.0 M aqueous solution, 14 mmol) is added to a suspension of 6-(4-bromo-2-chloro-phenylamino)-7-fluoro-3-methyl-3H-benzoimidazole-5-carboxylic acid (2-vinyloxy-ethoxy)-amide 29a (2.18 g, 4.50 mmol) in ethanol (50 mL) and the reaction mixture allowed to stir for 24 hours. The reaction mixture is concentrated to dryness by rotary evaporation and the solids partitioned between 3:1 ethyl acetate/tetrahydrofuran and saturated potassium carbonate. The aqueous phase is extracted with 3:1 ethyl acetate/tetrahydrofuran (3×), the combined organics dried (Na2SO4), and concentrated to provide 2.11 g (100%) 6-(4-bromo-2-chloro-phenylamino)-7-fluoro-3-methyl-3H-benzoimidazole-5-carboxylic acid (2-hydroxy-ethoxy)-amide as an off-white solid. MS ESI (+) m/z 457, 459 (M+, Br pattern) detected. 1H NMR (400 MHz, MeOH-d4) δ 8.26 (s, 1H), 7.78 (s, 1H), 7.57 (d, 1H), 7.24 (dd, 1H), 6.40 (dd, 1H), 3.86 (s, 3H), 3.79 (m, 2H), 3.49 (m, 2H). 19F NMR (376 MHz, MeOH-d4) −133.68 (s).

Aufarbeitung

  1. concentrationThe reaction mixture is concentrated to dryness by rotary evaporation
  2. customthe solids partitioned between 3:1 ethyl acetate/tetrahydrofuran and saturated potassium carbonate
  3. extractionThe aqueous phase is extracted with 3:1 ethyl acetate/tetrahydrofuran (3×)
  4. dry with materialthe combined organics dried (Na2SO4)
  5. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-ea0deef245444e34b0fe0a3c596348fb
Quelldatensatz
uspto-grants-2012_06
Patentnummer
US08193230B2

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