Study of the Acylation Reaction of 2(3H)-Benzothiazolones in the Mixture of ZnCl 2 -DMF
作者:Faouzi Guenadil、Houcine Aichaoui
DOI:10.1080/10426500214558
日期:2002.11.1
The use of polyphosphoric acid and the complex AlCl 3 -DMF in 6-acylation of 2(3H)-benzothiazolones previously have been reported. Instead of the frequently used AlCl 3 as a catalyst in the Friedl-Crafts reactions, we conducted the acylation of 2(3H)-benzothiazones using zinc chloride as a catalyst in DMF as solvent and acid chlorides or anhydrides as acylating agents.
AlCl3-DMF Reagent in the Friedel-Crafts Reaction. Application to the Acylation Reaction of 2(3H)-Benzothiazolones
作者:Said Yous、Jacques H. Poupaert、Isabelle Lesieur、Patric Depreux、Daniel Lesieur
DOI:10.1021/jo00085a052
日期:1994.3
New substituted benzothiazolinones
申请人:Adir et Compagnie
公开号:US05084469A1
公开(公告)日:1992-01-28
Compounds of general formula (I): ##STR1## in which: R.sub.1 represents a hydrogen atom or a lower alkyl group, and R.sub.2 represents a substituted or unsubstituted alkyl, a phenyl or a substituted or unsubstituted heteroaryl, their enantiomers, diastereoisomers and epimers and their addition salts with a pharmaceutically acceptable base when R.sub.1 represents a hydrogen atom or when R.sub.2 comprises a carboxylic acid group. Medicinal products.