2-Aminothiazole → 1-(2-Phenoxyphenyl)-5-(thiazol-2-yl)biuret

HRID 1983223

Reaktionsgleichung

Reaktionsgleichung von HRID 1983223
[O:1]([C:8]1[CH:14]=[CH:13][CH:12]=[CH:11][C:9]=1[NH2:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(N(C(C)C)CC)(C)C.[C:24](=[O:29])=[N:25][C:26](Cl)=[O:27].[NH2:30][C:31]1[S:32][CH:33]=[CH:34][N:35]=1>O1CCCC1>[O:1]([C:8]1[CH:14]=[CH:13][CH:12]=[CH:11][C:9]=1[NH:10][C:24]([NH:25][C:26]([NH:30][C:31]1[S:32][CH:33]=[CH:34][N:35]=1)=[O:27])=[O:29])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Komponenten

6

Reaktionsbedingungen

Temperatur
-30 °C

Versuchsvorschrift

To a solution of 2-phenoxyaniline (0.46 g, 2.50 mmol) in tetrahydrofuran (20 ml) was added diisopropylethylamine (0.89 ml, 5.00 mmol) and the solution was cooled to −30° C., then N-(chlorocarbonyl)isocyanate (0.3 ml, 3.75 mmol) was slowly added. The mixture was then allowed to warm up to the room temperature during 30 min. 2-Aminothiazole (0.375 g, 3.75 mmol) was added to the reaction mixture and stirred at room temperature for 6 hours. The reaction mixture was concentrated under reduced pressure to afford crude product, which was purified by silica gel chromatography (hexanes:ethyl acetate from 80:20 to 30:70) to afford title compound (0.49 g, 55%) as pale yellow solid.

Aufarbeitung

  1. temperatureto warm up to the room temperature during 30 min
  2. concentrationThe reaction mixture was concentrated under reduced pressure
  3. customto afford crude product, which
  4. customwas purified by silica gel chromatography (hexanes:ethyl acetate from 80:20 to 30:70)

Quellen und Nachweise

ORD-Eintrag
ord-d8e7185caa5f40f7be10b629d3767941
Quelldatensatz
uspto-grants-2009_06
Patentnummer
US07541373B2

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