Reaktion #95224

Reaktionsgleichung

aniline carbon disulfide

sulfur

→

2-mercaptobenzothiazole

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeIn a process for purifying crude molten 2-mercaptobenzothiazole
2. 2
   Sonstigeprepared
3. 3
   Sonstigein which the purification
4. 4
   Sonstigeof separating
5. 5
   workup.DISSOLUTIONdissolved alkali metal salt of 2-mercaptobenzothiazole from undissolved impurities
6. 6
   workup.ADDITIONtreating the dissolved alkali metal salt of 2-mercaptobenzothiazole with an excess of a non-oxidizing mineral acid
7. 7
   Sonstigeto precipitate a slurry of purified 2-mercaptobenzothiazole
8. 8
   Sonstigeseparating the purified 2-mercaptobenzothiazole solids from the slurry

Vorschrift

In a process for purifying crude molten 2-mercaptobenzothiazole, prepared by reacting aniline carbon disulfide and sulfur at elevated temperature and pressure, in which the purification includes the steps of separating dissolved alkali metal salt of 2-mercaptobenzothiazole from undissolved impurities, treating the dissolved alkali metal salt of 2-mercaptobenzothiazole with an excess of a non-oxidizing mineral acid to precipitate a slurry of purified 2-mercaptobenzothiazole, separating the purified 2-mercaptobenzothiazole solids from the slurry to obtain 2-mercaptobenzothiazole solids, washing the solids with water, and drying the purified 2-mercaptobenzothiazole, the improvement comprising; forming said dissolved alkali metal salt at 2-mercaptobenzothiazole and said dissolved impurities by the steps of

Quelle