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Water → tert-butyl (2S)-2-methyl-8-[(1Z)-prop-1-en-1-yl]-2,3-dihydrothieno[2,3-f][1,4]oxazepine-4(5H)-carboxylate

HRID 1404989
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1404989
Br[C:2]1[C:11]2[O:10][C@@H:9]([CH3:12])[CH2:8][N:7]([C:13]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14])[CH2:6][C:5]=2[S:4][CH:3]=1.[CH:20](/B(O)O)=[CH:21]/[CH3:22].C(=O)([O-])[O-].[K+].[K+].O>COCCOC.O.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH3:12][C@H:9]1[CH2:8][N:7]([C:13]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14])[CH2:6][C:5]2[S:4][CH:3]=[C:2](/[CH:20]=[CH:21]\[CH3:22])[C:11]=2[O:10]1
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Komponenten

7

Edukt 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 5355539(Z)-Prop-1-en-1-ylboronic acidHCID 86668486tert-butyl (2S)-8-bromo-2-methyl-2,3-dihydrothieno[2,3-f][1,4]oxazepine-4(5H)-carboxylate

Produkt 1

HCID 86668490tert-butyl (2S)-2-methyl-8-[(1Z)-prop-1-en-1-yl]-2,3-dihydrothieno[2,3-f][1,4]oxazepine-4(5H)-carboxylateAusbeute 75 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418476HCID 178418476, VerbindungKatalysatorHCID 18180031Water 1,2-dimethoxyethaneLösungsmittel

Versuchsvorschrift

A mixed solution of tert-butyl (2S)-8-bromo-2-methyl-2,3-dihydrothieno[2,3-f][1,4]oxazepine-4(5H)-carboxylate (599 mg) obtained in Example 12, steps 1-4, cis-propenylboronic acid (192 mg), dichlorobis(triphenylphosphine)palladium (60 mg) and potassium carbonate (713 mg) in DME-water (1:1, 20 mL) was stirred at 85° C. for 4 hr under a nitrogen stream. The reaction solution was cooled to room temperature, water was added, and the mixture was extracted with ethyl acetate. The extract was washed with water and saturated brine, and dried over magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (solvent gradient; 5→15% ethyl acetate/hexane) to give the title compound (399 mg, 75%) as a colorless oil.

Aufarbeitung

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with water and saturated brine
  3. dry with materialdried over magnesium sulfate
  4. customthe solvent was evaporated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (solvent gradient; 5→15% ethyl acetate/hexane)

Quellen und Nachweise

ORD-Eintrag
ord-5cfce0839dd5461d9df33ba76765559e
Quelldatensatz
uspto-grants-2014_12
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08916549B2

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