Phosgene → 5,6-Dichlorobenzothiazol-2-yl isocyanate

HRID 2083647Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2083647
[C:1](Cl)(Cl)=[O:2].[NH2:5][C:6]1[S:7][C:8]2[CH:14]=[C:13]([Cl:15])[C:12]([Cl:16])=[CH:11][C:9]=2[N:10]=1>C(OCC)(=O)C>[Cl:16][C:12]1[C:13]([Cl:15])=[CH:14][C:8]2[S:7][C:6]([N:5]=[C:1]=[O:2])=[N:10][C:9]=2[CH:11]=1

Komponenten

4

Edukt 2

HCID 6371PhosgeneHCID 322065,6-Dichloro-2-benzothiazolamine

Produkt 1

HCID 540279235,6-Dichlorobenzothiazol-2-yl isocyanate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

A saturated solution of phosgene in ethyl acetate (200 ml) is charged into a glass reaction vessel equipped with a mechanical stirrer, thermometer and reflux condenser. 2-Amino-5,6-dichlorobenzothiazole (0.1 mole) is added with stirring. After the addition is completed, the reaction mixture is heated at reflux for a period of about one hour. After this time the mixture is cooled, and the solid product formed is recovered by filtration. The solid is then dried to yield the desired product 5,6-dichlorobenzothiazol-2-yl isocyanate dimer.

Aufarbeitung

  1. customequipped with a mechanical stirrer
  2. temperaturethermometer and reflux condenser
  3. additionAfter the addition
  4. temperaturethe reaction mixture is heated
  5. temperatureat reflux for a period of about one hour
  6. temperatureAfter this time the mixture is cooled
  7. customthe solid product formed
  8. filtrationis recovered by filtration
  9. customThe solid is then dried

Quellen und Nachweise

ORD-Eintrag
ord-cf319445fd2f40a1a0d34fcbc553affc
Quelldatensatz
uspto-grants-1978_04
Patentnummer
US04086241

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