Tetrabutylammonium Fluoride → 6-(4-Ethynyl-2-methyl-phenylamino)-7-fluoro-3H-benzoimidazole-5-carboxylic acid cyclopropylmethoxy-amide

HRID 216508Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 216508
[CH:1]1([CH2:4][O:5][NH:6][C:7]([C:9]2[C:17]([NH:18][C:19]3[CH:24]=[CH:23][C:22]([C:25]#[C:26][Si](C)(C)C)=[CH:21][C:20]=3[CH3:31])=[C:16]([F:32])[C:12]3[N:13]=[CH:14][NH:15][C:11]=3[CH:10]=2)=[O:8])[CH2:3][CH2:2]1.CCCC[N+](CCCC)(CCCC)CCCC.[F-]>O1CCCC1.O>[CH:1]1([CH2:4][O:5][NH:6][C:7]([C:9]2[C:17]([NH:18][C:19]3[CH:24]=[CH:23][C:22]([C:25]#[CH:26])=[CH:21][C:20]=3[CH3:31])=[C:16]([F:32])[C:12]3[N:13]=[CH:14][NH:15][C:11]=3[CH:10]=2)=[O:8])[CH2:3][CH2:2]1

Komponenten

5

Edukt 2

HCID 2724141Tetrabutylammonium Fluoride2×HCID 865905277-Fluoro-6-(2-methyl-4-trimethylsilanylethynyl-phenylamino)-3H-benzoimidazole-5-carboxylic acid cyclopropylmethoxyamide

Produkt 1

HCID 588906896-(4-Ethynyl-2-methyl-phenylamino)-7-fluoro-3H-benzoimidazole-5-carboxylic acid cyclopropylmethoxy-amideAusbeute 66,1 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterKatalysatorHCID 8028TetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

7-Fluoro-6-(2-methyl-4-trimethylsilanylethynyl-phenylamino)-3H-benzoimidazole-5-carboxylic acid cyclopropylmethoxy-amide 11bbb (0.020 g, 0.044 mmol) is dissolved in tetrahydrofuran (0.50 mL) and the reaction solution is cooled to 0° C. TBAF (50 uL, 0.050 mmol, 1 M solution in tetrahydrofuran) is added. The reaction mixture is warmed to room temperature and additional TBAF (25 uL, 0.025 mmol, 1 M solution in tetrahydrofuran) is added. The reaction mixture is stirred at 50° C. for 2 hours under N2. The reaction mixture is cooled to room temperature, a few drops of H2O are added and then it is concentrated under reduced pressure. The residue is purified by FCC (eluting with 20:1 methylene chloride:methanol) to yield 0.011 g (65%) of the pure desired product. MS APCI (−) m/z 377 (M−1) detected; 1H NMR (400 MHz, CDCl3) δ 10.56 (broad s, 1H), 8.12 (s, 1H), 7.99 (s, 1H), 7.28 (s, 1H), 7.11 (d, 1H), 6.42 (broad, 1H), 3.70 (br s, 2H), 2.96 (d, 1H), 2.37 (s, 3H), 0.85 (m, 1H), 0.50 (m, 2H), 0.22 (m, 2H).

Aufarbeitung

  1. temperatureThe reaction mixture is warmed to room temperature
  2. temperatureThe reaction mixture is cooled to room temperature
  3. concentrationit is concentrated under reduced pressure
  4. customThe residue is purified by FCC (eluting with 20:1 methylene chloride:methanol)

Quellen und Nachweise

ORD-Eintrag
ord-dea78e614206466ab4fda9a312b0dda8
Quelldatensatz
uspto-grants-2012_06
Patentnummer
US08193229B2

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