Diisopropylethylamine → (S)-3-((4-(4-chlorophenyl)piperidin-1-yl)methyl)-7,8,9,10-tetrahydro-5H-dipyrido[1,2-a:3',2'-e]pyrazin-6(6aH)-one

HRID 69627

Reaktionsgleichung

Reaktionsgleichung von HRID 69627
O[CH2:2][C:3]1[CH:12]=[N:11][C:10]2[N:9]3[CH2:13][CH2:14][CH2:15][CH2:16][C@H:8]3[C:7](=[O:17])[NH:6][C:5]=2[CH:4]=1.[I-].C(C[P+](C)(C)C)#N.C(N(C(C)C)C(C)C)C.Cl.[Cl:36][C:37]1[CH:42]=[CH:41][C:40]([CH:43]2[CH2:48][CH2:47][NH:46][CH2:45][CH2:44]2)=[CH:39][CH:38]=1>C(#N)CC>[Cl:36][C:37]1[CH:42]=[CH:41][C:40]([CH:43]2[CH2:44][CH2:45][N:46]([CH2:2][C:3]3[CH:12]=[N:11][C:10]4[N:9]5[CH2:13][CH2:14][CH2:15][CH2:16][C@H:8]5[C:7](=[O:17])[NH:6][C:5]=4[CH:4]=3)[CH2:47][CH2:48]2)=[CH:39][CH:38]=1

Komponenten

6

Edukt 4

HCID 81531DiisopropylethylamineHCID 27578434-(4-chlorophenyl)piperidine HydrochlorideHCID 10514344(Cyanomethyl)trimethylphosphanium iodideHCID 58324368(S)-3-(hydroxymethyl)-7,8,9,10-tetrahydro-5H-dipyrido[1,2-a:3',2'-e]pyrazin-6(6aH)-one

Produkt 1

HCID 58324376(S)-3-((4-(4-chlorophenyl)piperidin-1-yl)methyl)-7,8,9,10-tetrahydro-5H-dipyrido[1,2-a:3',2'-e]pyrazin-6(6aH)-oneAusbeute 12,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 7854PropionitrileLösungsmittel

Reaktionsbedingungen

Temperatur
90 °C

Versuchsvorschrift

(S)-3-(hydroxymethyl)-7,8,9,10-tetrahydro-5H-dipyrido[1,2-a:3′,2′-e]pyrazin-6(6aH)-one (100 mg, 0.429 mmol) was suspended in propionitrile (1 mL) and (cyanomethyl)trimethylphosphonium iodide (125.0 mg, 0.51 mmol) was added followed by N-ethyl-N-isopropylpropan-2-amine (225 ul, 1.3 mmol). To the stirred mixture was then added 4-(4-chlorophenyl)piperidine hydrochloride (109 mg, 0.472 mmol). The reaction was heated to 90° C. with stirring for 16 h. The crude reaction was cooled to room temperature and concentrated to a residue, then taken up in 3 mL DMSO and purified via HPLC (55-90% acetonitrile in water, ammonium bicarbonate buffer). The fractions were combined and concentrated until a white solid precipitated. The precipitate was filtered off and dried in vacuum to afford the title compound (22.1 mg, 12.5%) as a white solid. 1H NMR (DMSO-d6) δ (ppm): 10.46 (s, 1H), 7.64 (d, J=2.0 Hz, 1H), 7.29-7.37 (m, 2H), 7.21-7.28 (m, 2H), 6.96 (d, J=2.0 Hz, 1H), 4.42-4.58 (m, 1H), 3.83 (dd, J=11.4, 2.8 Hz, 1H), 3.32 (s, 2H), 2.80-2.95 (m, 2H), 2.54-2.66 (m, 1H), 1.92-2.08 (m, 3H), 1.83 (br. s., 1H), 1.66-1.77 (m, 2H), 1.33-1.66 (m, 6H). [M+H] calc'd for C23H27ClN4O, 411; found, 411.

Aufarbeitung

  1. customThe crude reaction
  2. temperaturewas cooled to room temperature
  3. concentrationconcentrated to a residue
  4. custompurified via HPLC (55-90% acetonitrile in water, ammonium bicarbonate buffer)
  5. concentrationconcentrated until a white solid
  6. customprecipitated
  7. filtrationThe precipitate was filtered off
  8. customdried in vacuum

Quellen und Nachweise

ORD-Eintrag
ord-edfbe2607db14ea8b138bbe59c86a9cc
Quelldatensatz
uspto-grants-2014_09
Patentnummer
US08822470B2

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