Methanol → 1-Benzothiazol-6-yl-3-(2-chloro-1,1-dimethyl-ethyl)-urea

HRID 2383899

Reaktionsgleichung

Reaktionsgleichung von HRID 2383899
[S:1]1[C:5]2[CH:6]=[C:7]([NH2:10])[CH:8]=[CH:9][C:4]=2[N:3]=[CH:2]1.[Cl:11][CH2:12][C:13]([N:16]=[C:17]=[O:18])([CH3:15])[CH3:14].CO>C1(C)C=CC=CC=1.C(Cl)(Cl)Cl>[S:1]1[C:5]2[CH:6]=[C:7]([NH:10][C:17]([NH:16][C:13]([CH3:15])([CH3:14])[CH2:12][Cl:11])=[O:18])[CH:8]=[CH:9][C:4]=2[N:3]=[CH:2]1

Komponenten

6

Edukt 3

HCID 887MethanolHCID 682886-AminobenzothiazoleHCID 110407471-Chloro-2-isocyanato-2-methyl-propane

Produkt 1

HCID 687898531-Benzothiazol-6-yl-3-(2-chloro-1,1-dimethyl-ethyl)-ureaAusbeute 18,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 1140TolueneLösungsmittelHCID 6212ChloroformLösungsmittel

Versuchsvorschrift

Benzothiazol-6-ylamine (1.8 g, 12.00 mmol) was added portion wise to solution of 1-chloro-2-isocyanato-2-methyl-propane (2 g, 13.60 mmol) in toluene (20 mL) over a period of 5 minutes. The resulting mixture was stirred at room temperature for 2½ days. The reaction was monitored by TLC (5% MeOH in CHCl3). The reaction mixture was concentrated and extracted with ethylacetate. The organic layer was dried over Na2SO4 and concentrated. Purification by column chromatography on silica gel (1% MeOH in CHCl3) afforded 630 mg of the product (16.57% yield).

Aufarbeitung

  1. concentrationThe reaction mixture was concentrated
  2. extractionextracted with ethylacetate
  3. dry with materialThe organic layer was dried over Na2SO4
  4. concentrationconcentrated
  5. customPurification by column chromatography on silica gel (1% MeOH in CHCl3)

Quellen und Nachweise

ORD-Eintrag
ord-7c904e679ee64eb18b6d51800421459f
Quelldatensatz
uspto-grants-2012_09
Patentnummer
US08263635B2

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