Sodium hydride → 2-[2-(4-Phenoxyphenoxy)ethylthio]-2-thiazoline

HRID 1638297Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1638297
[H-].[Na+].[SH:3][C:4]1[S:5][CH2:6][CH2:7][N:8]=1.[H][H].[O:11]([C:18]1[CH:27]=[CH:26][C:21]([O:22][CH2:23][CH2:24]Br)=[CH:20][CH:19]=1)[C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1>CN(C)C=O.O>[O:11]([C:18]1[CH:19]=[CH:20][C:21]([O:22][CH2:23][CH2:24][S:3][C:4]2[S:5][CH2:6][CH2:7][N:8]=2)=[CH:26][CH:27]=1)[C:12]1[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=1

Komponenten

7

Edukt 4

HCID 24758Sodium hydrideHCID 132544871-(2-Bromoethoxy)-4-phenoxybenzeneHCID 178418361HCID 178418361, VerbindungHCID 178527880HCID 178527880, Verbindung

Produkt 1

HCID 133867902-[2-(4-Phenoxyphenoxy)ethylthio]-2-thiazolineAusbeute 66,9 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittel3×

Versuchsvorschrift

To a suspension of sodium hydride (160 mg, 4.0 mmol; 60% in oil) in dimethylformamide (5 ml), a solution of 2-mercapto-2-thiazoline (476 mg, 4.0 mmol) in dimethylformamide (3 ml) was dropwise added with stirring, and stirring was continued until the generation of hydrogen gas ceased. To the resultant solution, there was dropwise added a solution of 2-(4-phenoxyphenoxy)ethyl bromide (1.17 g, 4.0 mmol) in dimethylformamide (3 ml), and the mixture was stirred at room temperature overnight. The reaction mixture was poured into water (80 ml) and extracted with toluene (40 ml) three times. The toluene layer was dried over anhydrous magnesium sulfate, and the solvent was removed by evaporation. The residue was purified by silica gel column chromatography to give 2-[2-(4-phenoxyphenoxy)ethylthio]-2-thiazoline (887 mg) as pale yellow crystals. M.P., 88.6° C.

Aufarbeitung

  1. stirringstirring
  2. stirringthe mixture was stirred at room temperature overnight
  3. extractionextracted with toluene (40 ml) three times
  4. dry with materialThe toluene layer was dried over anhydrous magnesium sulfate
  5. customthe solvent was removed by evaporation
  6. customThe residue was purified by silica gel column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-1ded7ebaf1e84654a50f3737d37c676e
Quelldatensatz
uspto-grants-1989_11
Patentnummer
US04879292

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