Hydrochloric Acid → Tert-butyl 1,2,4a,5,6,7-hexahydrobenzo[b]pyrazino[1,2-d][1,4]diazepine-3(4h)-carboxylate

HRID 1896116Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1896116
O=[C:2]1[NH:8][C:7]2[CH:9]=[CH:10][CH:11]=[CH:12][C:6]=2[N:5]2[CH2:13][CH2:14][N:15]([C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])[CH2:16][CH:4]2[CH2:3]1.B.Cl.C(=O)(O)[O-].[Na+]>O1CCCC1.ClCCl.CO>[CH2:13]1[N:5]2[C:6]3[CH:12]=[CH:11][CH:10]=[CH:9][C:7]=3[NH:8][CH2:2][CH2:3][CH:4]2[CH2:16][N:15]([C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])[CH2:14]1

Komponenten

8

Edukt 4

HCID 313Hydrochloric AcidHCID 6331BoraneHCID 516892Sodium BicarbonateHCID 58284919tert-butyl 6-oxo-1,2,4a,5,6,7-hexahydropyrazino[1,2-a][1,5]benzodiazepine-3(4H)-carboxylate

Produkt 1

HCID 58284934Tert-butyl 1,2,4a,5,6,7-hexahydrobenzo[b]pyrazino[1,2-d][1,4]diazepine-3(4h)-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 887MethanolLösungsmittelHCID 6344DichloromethaneLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

To a solution of Example 1C (1 g, 3.15 mmol) in tetrahydrofuran (10 mL) was added borane (1 M/tetrahydrofuran, 12.6 mL, 12.6 mmol). The solution was heated to 80° C. for 4 hours. Methanol (20 mL) was added, and the reaction heated at 80° C. for 1 hour. The reaction was cooled to room temperature and 1 M HCl (30 mL) was added. This solution was stirred for 30 minutes, before the solution was neutralized with sodium bicarbonate (aqueous). Dichloromethane was used to extract the product. The product was purified via flash chromatography (20-70% ethyl acetate/hexanes) to afford the title compound. 1H NMR (300 MHz, DMSO-d6) δ ppm 6.77 (d, J=7.54 Hz, 1 H), 6.64-6.73 (m, 1 H), 6.48-6.59 (m, 2 H), 5.27 (s, 1 H), 3.54-3.67 (m, 1 H), 3.35-3.50 (m, 2 H), 3.20-3.29 (m, 1 H), 2.96-3.19 (m, 4 H), 2.85-2.96 (m, 1 H), 1.76-1.92 (m, 1 H), 1.59-1.75 (m, 1 H), 1.41 (s, 9 H); MS (APCI+) m/z 304.3 (M+H)+.

Aufarbeitung

  1. temperaturethe reaction heated at 80° C. for 1 hour
  2. temperatureThe reaction was cooled to room temperature
  3. extractionto extract the product
  4. customThe product was purified via flash chromatography (20-70% ethyl acetate/hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-30b8072800bd4714adde907f26bcc22a
Quelldatensatz
uspto-grants-2013_08
Patentnummer
US08518933B2

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