Water → 8-Benzyl-3-(cyclopent-1-en-1-yl)-6,7,8,9-tetrahydropyrazino[2,3-f][1,4]oxazepine

HRID 518038Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 518038
[CH2:1]([N:8]1[CH2:14][C:13]2[N:15]=[CH:16][C:17](Cl)=[N:18][C:12]=2[O:11][CH2:10][CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:20]1(B(O)O)[CH2:24][CH2:23][CH2:22][CH:21]=1.C(=O)([O-])[O-].[Na+].[Na+].O>COCCOC.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH2:1]([N:8]1[CH2:14][C:13]2[N:15]=[CH:16][C:17]([C:20]3[CH2:24][CH2:23][CH2:22][CH:21]=3)=[N:18][C:12]=2[O:11][CH2:10][CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Komponenten

7

Edukt 4

HCID 962WaterHCID 10340Sodium CarbonateHCID 3861343(Cyclopent-1-en-1-yl)boronic acidHCID 866489818-Benzyl-3-chloro-6,7,8,9-tetrahydropyrazino[2,3-f][1,4]oxazepine

Produkt 1

HCID 669933658-Benzyl-3-(cyclopent-1-en-1-yl)-6,7,8,9-tetrahydropyrazino[2,3-f][1,4]oxazepineAusbeute 68 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 80711,2-DimethoxyethaneLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

A solution of 8-benzyl-3-chloro-6,7,8,9-tetrahydropyrazino[2,3-f][1,4]oxazepine (559 mg), cyclopent-1-en-1-ylboronic acid (273 mg), tetrakis(triphenylphosphine)palladium(0) (118 mg) and aqueous sodium carbonate solution (2M, 2 mL) in DME (10 mL) was stirred under an argon atmosphere with heating at 100° C. for 2 hr. Water was added to the reaction mixture, the aqueous layer was extracted with ethyl acetate, and the organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The obtained residue was purified by basic silica gel column chromatography (solvent gradient: 5→50% ethyl acetate/hexane) to give the title compound (424 mg, 68%) as a colorless oil.

Aufarbeitung

  1. extractionthe aqueous layer was extracted with ethyl acetate
  2. washthe organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe obtained residue was purified by basic silica gel column chromatography (solvent gradient: 5→50% ethyl acetate/hexane)

Quellen und Nachweise

ORD-Eintrag
ord-d8ed93055c154c5989bafba59d8a8092
Quelldatensatz
uspto-grants-2015_08
Patentnummer
US09115139B2

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