StartseiteMCPWorkbenchSkills
StartseiteWorkbenchBenachrichtigungenMein Bereich
llms.txt · MCP-AnleitungDatenschutz · Nutzungsbedingungen · Supportv1.8.0
  1. Startseite
  2. /Reaktion

1,4-Dioxane → 1,1-dimethylethyl 7-(4-amino-3-nitrophenyl)-2,3-dihydro-1,4-benzoxazepine-4(5H)-carboxylate

HRID 473866
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 473866
[CH3:1][C:2]([O:5][C:6]([N:8]1[CH2:14][C:13]2[CH:15]=[C:16](B(O)O)[CH:17]=[CH:18][C:12]=2[O:11][CH2:10][CH2:9]1)=[O:7])([CH3:4])[CH3:3].Br[C:23]1[CH:29]=[CH:28][C:26]([NH2:27])=[C:25]([N+:30]([O-:32])=[O:31])[CH:24]=1.O1CCOCC1.CCN(C(C)C)C(C)C>O>[NH2:27][C:26]1[CH:28]=[CH:29][C:23]([C:16]2[CH:17]=[CH:18][C:12]3[O:11][CH2:10][CH2:9][N:8]([C:6]([O:5][C:2]([CH3:4])([CH3:3])[CH3:1])=[O:7])[CH2:14][C:13]=3[CH:15]=2)=[CH:24][C:25]=1[N+:30]([O-:32])=[O:31]
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 312751,4-DioxaneHCID 701324-Bromo-2-nitroanilineHCID 81531DiisopropylethylamineHCID 59604707(4-(Tert-butoxycarbonyl)-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepin-7-yl)boronic acid

Produkt 1

HCID 675056591,1-dimethylethyl 7-(4-amino-3-nitrophenyl)-2,3-dihydro-1,4-benzoxazepine-4(5H)-carboxylateAusbeute 72,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
95 °C

Versuchsvorschrift

(4-{[(1,1-dimethylethyl)oxycarbonyl}-2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl)boronic acid (example 1, step 2) (2.22 g, 7.57 mmol) and 4-bromo-2-nitroaniline (1.56 g, 7.20 mmol) were taken into dioxane (20 mL), water (4 mL) and DIPEA (5.4 mL, 31 mmol) followed by addition of dichloro[1,1-bis(diphenylphosphino]ferrocenepalladium (II) dichloromethane adduct (322 mg, 0.39 mmol) and the mixture was heated to 95° C. for 2 h. The mixture was cooled to room temperature and partitioned with ethyl acetate and 10% aqueous citric acid. The biphasic mixture was filtered through a celite pad and the organic filtrate was washed once with 0.5M aqueous hydrochloric acid, brine then dried over anhydrous magnesium sulfate, filtered and concentrated. The residue was purified by silica gel chromatography to give 1,1-dimethylethyl 7-(4-amino-3-nitrophenyl)-2,3-dihydro-1,4-benzoxazepine-4(5H)-carboxylate (2.01 g, 69% yield) as a yellow crystalline solid.

Aufarbeitung

  1. temperatureThe mixture was cooled to room temperature
  2. custompartitioned with ethyl acetate and 10% aqueous citric acid
  3. filtrationThe biphasic mixture was filtered through a celite pad
  4. washthe organic filtrate was washed once with 0.5M aqueous hydrochloric acid, brine
  5. dry with materialthen dried over anhydrous magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe residue was purified by silica gel chromatography

Quellen und Nachweise

ORD-Eintrag
ord-b6f0056e96de490e9cea155ea9f9a963
Quelldatensatz
uspto-grants-2014_01
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08637499B2

Notizen zur Reaktion

Wird geladen…

Auf dieser SeiteKomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion