Science and Technology Production
Article
Authorship
Mario L. Aimar
;
KREIKER, JERONIMO RAFAEL
;
Rita H. de Rossi
Date
2002
Publishing House and Editing Place
Elsevier Science, Ltd
Magazine
TETRAHEDRON LETTERS,
vol. 43
(pp. 1947-1949)
Elsevier Science, Ltd
Summary
Information provided by the agent in
SIGEVA
The reaction of dithiolmalonic esters with P2S5/S8 in boiling xylene and with 2-mercaptobenzothiazole/ZnO as catalyst produces 5-R (R=alkyl or aryl) thio-3H-1,2-dithiole-3-thiones as the major identifiable product. The use of Lawesson’s reagent as sulfurizing agent gives even better yields. For instance with R=phenyl the yield rises from 44 to 82%.