8-Amino-1,4-diethyl-1,2,3,4-tetrahydro-benzo[e][1,4]diazepin-5-one → 1,4-Diethyl-2,3,4,5-tetrahydro-1H-1,4-benzodiazepin-8-ylamine

HRID 1041029Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1041029
[NH2:1][C:2]1[CH:3]=[CH:4][C:5]2[C:11](=O)[N:10]([CH2:13][CH3:14])[CH2:9][CH2:8][N:7]([CH2:15][CH3:16])[C:6]=2[CH:17]=1>O1CCOCC1.C1COCC1>[CH2:15]([N:7]1[C:6]2[CH:17]=[C:2]([NH2:1])[CH:3]=[CH:4][C:5]=2[CH2:11][N:10]([CH2:13][CH3:14])[CH2:9][CH2:8]1)[CH3:16]

Komponenten

4

Edukt 1

HCID 672633818-Amino-1,4-diethyl-1,2,3,4-tetrahydro-benzo[e][1,4]diazepin-5-one

Produkt 1

HCID 672642811,4-Diethyl-2,3,4,5-tetrahydro-1H-1,4-benzodiazepin-8-ylamineAusbeute 84 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittelHCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
75 °C

Versuchsvorschrift

To a solution of 8-Amino-1,4-diethyl-1,2,3,4-tetrahydro-benzo[e][1,4]diazepin-5one (22.0 g, 0.0944 mol) in dioxane (400 mL) was added borane dimethyl sulfide complex solution (2 M in THF, 118 mL, 0.236 mol) and heated at 75° C. for 4 hr. The reaction was quenched with ethanol (100 mL) and stirred at room temperature for 18 hr., then evaporated. To the residue was added hydrazine hydrate (100 mL) and heated at 95° C. for 4 hr. After evaporation, toluene (50 mL) and ethanol (50 mL) werer added, distilled and the reaction evaporated. The residue was extracted with DCM, evaporated, dissolved in ether, filtered and evaporated to give 1,4-Diethyl-2,3,4,5-tetrahydro-1H-benzo[e][1,4]diazepin-8-ylamine as an oil (16.0 g, 84%). LCMS (m/e) 220 (M+1); 1H-NMR (DMSO, 400 MHz) δ 6.79-6.71 (d, 1H, J=7.83 Hz), 6.49 (br, 1H,), 6.01-5.99 (d, 1H, J=7.83 Hz), 4.79 (s, 2H), 3.07-3.02 (q, 2H, J=6.82 Hz), 2.85-2.83 (t, 2H, J=8.08 Hz), 2.70-2.68 (t, 2H, J=8.09 Hz), 1.13-1.10 (t, 3H, J=7.07 Hz), 1.00-0.97 (t, 3H, J=7.32 Hz),

Aufarbeitung

  1. customThe reaction was quenched with ethanol (100 mL)
  2. custom, then evaporated
  3. additionTo the residue was added hydrazine hydrate (100 mL)
  4. temperatureheated at 95° C. for 4 hr
  5. customAfter evaporation, toluene (50 mL) and ethanol (50 mL) werer
  6. additionadded
  7. distillationdistilled
  8. customthe reaction evaporated
  9. extractionThe residue was extracted with DCM
  10. customevaporated
  11. dissolutiondissolved in ether
  12. filtrationfiltered
  13. customevaporated

Quellen und Nachweise

ORD-Eintrag
ord-f9ab161f2e164853997731f9b65bde4e
Quelldatensatz
uspto-grants-2013_10
Patentnummer
US08552186B2

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