Diisopropylethylamine → (S)-3-((4-(2,4-difluorophenyl)piperazin-1-yl)methyl)-6a,7,8,9-tetrahydropyrido[3,2-e]pyrrolo[1,2-a]pyrazin-6(5H)-one

HRID 716228Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 716228
O[CH2:2][C:3]1[CH:12]=[N:11][C:10]2[N:9]3[CH2:13][CH2:14][CH2:15][C@H:8]3[C:7](=[O:16])[NH:6][C:5]=2[CH:4]=1.[F:17][C:18]1[CH:23]=[C:22]([F:24])[CH:21]=[CH:20][C:19]=1[N:25]1[CH2:30][CH2:29][NH:28][CH2:27][CH2:26]1.[I-].C(C[P+](C)(C)C)#N.C(N(CC)C(C)C)(C)C>C(#N)CC.CS(C)=O>[F:17][C:18]1[CH:23]=[C:22]([F:24])[CH:21]=[CH:20][C:19]=1[N:25]1[CH2:26][CH2:27][N:28]([CH2:2][C:3]2[CH:12]=[N:11][C:10]3[N:9]4[CH2:13][CH2:14][CH2:15][C@H:8]4[C:7](=[O:16])[NH:6][C:5]=3[CH:4]=2)[CH2:29][CH2:30]1

Komponenten

7

Edukt 4

HCID 81531DiisopropylethylamineHCID 27346371-(2,4-Difluorophenyl)piperazineHCID 10514344(Cyanomethyl)trimethylphosphanium iodideHCID 58324378(S)-3-(hydroxymethyl)-6a,7,8,9-tetrahydropyrido[3,2-e]pyrrolo[1,2-a]pyrazin-6(5H)-one

Produkt 1

HCID 58324446(S)-3-((4-(2,4-difluorophenyl)piperazin-1-yl)methyl)-6a,7,8,9-tetrahydropyrido[3,2-e]pyrrolo[1,2-a]pyrazin-6(5H)-oneAusbeute 23,13 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 679Dimethyl SulfoxideLösungsmittelHCID 7854PropionitrileLösungsmittel

Reaktionsbedingungen

Temperatur
90 °C

Versuchsvorschrift

(S)-3-(hydroxymethyl)-6a,7,8,9-tetrahydropyrido[3,2-e]pyrrolo[1,2-a]pyrazin-6(5H)-one (150 mg, 0.684 mmol), 1-(2,4-difluorophenyl)piperazine (136 mg, 0.684 mmol), (cyanomethyl)trimethylphosphonium iodide (249 mg, 1.026 mmol) and N,N-diisopropylethylamine (0.597 ml, 3.42 mmol) were suspended in propionitrile (2 ml) and heated in a closed vial at 90° C. for 2 h. The reaction mixture became a clear dark brown solution. It was cooled to room temperature, diluted with DMSO (2 mL) and purified using preparative HPLC (25-95% acetonitrile in water, NH4HCO3 buffered). The fractions containing product were concentrated in vacuo and crystallized from water (3 mL). The precipitate was filtered and dried in vacuum to afford (S)-3-((4-(2,4-difluorophenyl)piperazin-1-yl)methyl)-6a,7,8,9-tetrahydropyrido[3,2-e]pyrrolo[1,2-a]pyrazin-6(5H)-one (63.2 mg, 0.158 mmol, 23.13% yield) as a light brown solid. 1H NMR (400 MHz, DMSO-d6) δ (ppm): 1.84-2.03 (m, 3H) 2.09-2.26 (m, 1H) 2.41-2.49 (m, 4H) 2.88-2.99 (m, 4H) 3.34-3.43 (m, 3H) 3.54-3.63 (m, 1H) 3.94-4.02 (m, 1H) 6.93-7.09 (m, 3H) 7.18 (ddd, J=12.44, 9.16, 2.91 Hz, 1H) 7.61 (d, J=1.77 Hz, 1H) 10.44 (s, 1H); [M+H] calc'd for C21H23F2N5O, 400. found, 400.

Aufarbeitung

  1. temperatureIt was cooled to room temperature
  2. custompurified
  3. additionThe fractions containing product
  4. concentrationwere concentrated in vacuo
  5. customcrystallized from water (3 mL)
  6. filtrationThe precipitate was filtered
  7. customdried in vacuum

Quellen und Nachweise

ORD-Eintrag
ord-abbfd3aa5076477ba38b8c0dd3665685
Quelldatensatz
uspto-grants-2015_11
Patentnummer
US09187497B2

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