Trifluoroacetic acid → 6-((1R,2S)-2-aminocyclohexylamino)-4-(6-cyclopropylpyridin-2-ylamino) pyridazine-3-carboxamide

HRID 1396373Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1396373
[C:1]([C:4]1[N:9]=[N:8][C:7]([NH:10][C@@H:11]2[CH2:16][CH2:15][CH2:14][CH2:13][C@@H:12]2[NH:17]C(=O)OC(C)(C)C)=[CH:6][C:5]=1[NH:25][C:26]1[CH:31]=[CH:30][CH:29]=[C:28]([CH:32]2[CH2:34][CH2:33]2)[N:27]=1)(=[O:3])[NH2:2].C(O)(C(F)(F)F)=O>ClCCl>[NH2:17][C@H:12]1[CH2:13][CH2:14][CH2:15][CH2:16][C@H:11]1[NH:10][C:7]1[N:8]=[N:9][C:4]([C:1]([NH2:2])=[O:3])=[C:5]([NH:25][C:26]2[CH:31]=[CH:30][CH:29]=[C:28]([CH:32]3[CH2:33][CH2:34]3)[N:27]=2)[CH:6]=1

Komponenten

4

Edukt 2

HCID 6422Trifluoroacetic acidHCID 86689734tert-butyl (1S,2R)-2-(6-carbamoyl-5-(6-cyclopropylpyridin-2-ylamino)pyridazin-3-ylamino)cyclohexylcarbamate

Produkt 1

HCID 716268946-((1R,2S)-2-aminocyclohexylamino)-4-(6-cyclopropylpyridin-2-ylamino) pyridazine-3-carboxamideAusbeute 66,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of tert-butyl (1S,2R)-2-(6-carbamoyl-5-(6-cyclopropylpyridin-2-ylamino)pyridazin-3-ylamino)cyclohexylcarbamate (25 mg, 53.5 μmol) in dichloromethane (4 mL) was added TFA (370 μg, 0.25 μL, 3.24 μmol). After 6 h, the mixture was concentrated in vacuo, then purified by flash chromatography (spherical silica, 20-45 μm, 25 g, Versaflash from Supelco, 97:2.75:0.15 to 84:15.2:0.8 dichloromethane:MeOH:NH4OH, 30 min) to give 6-((1R,2S)-2-aminocyclohexylamino)-4-(6-cyclopropylpyridin-2-ylamino) pyridazine-3-carboxamide (13 mg, 10%, two steps) as a brown solid. 1H NMR (300 MHz, CHLOROFORM-d) δ ppm 11.43 (br. s., 1H) 8.17 (br. s., 1H) 8.03 (br. s., 1H) 7.44 (br. s., 1H) 7.03 (br. s., 1H) 6.80 (br. s., 1H) 6.60 (br. s., 1H) 5.76 (br. s., 1H) 5.49 (br. s., 1H) 3.82 (br. s., 1H) 3.24 (br. s., 1H) 2.03 (br. s., 1H) 1.32-1.91 (m, 8H) 1.05 (d, J=16.62 Hz, 4H). LCMS (EI/CI) m/z: 368 [M+H].

Aufarbeitung

  1. concentrationthe mixture was concentrated in vacuo
  2. custompurified by flash chromatography (spherical silica, 20-45 μm, 25 g, Versaflash from Supelco, 97:2.75:0.15 to 84:15.2:0.8 dichloromethane:MeOH:NH4OH, 30 min)

Quellen und Nachweise

ORD-Eintrag
ord-cf9ea56ef0f444f1931c689838c8a9da
Quelldatensatz
uspto-grants-2014_12
Patentnummer
US08901124B2

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