Diverse trifluoromethyl-substituted compounds were synthesized by deoxofluorination of cinnamic and (hetero)aromatic carboxylic acids with sulfur tetrafluoride. The obtained products were used as starting materials in the preparation of novel fluorinated amino acids, anilines, and aliphatic amines - valuable building blocks for medicinal chemistry and agrochemistry.
Alekseenko, Anatoliy N.,Bugera, Maksym Ya.,Gerus, Igor I.,Kiriakov, Oleksandr,Klipkov, Anton A.,Mykhailiuk, Pavel K.,Pustovit, Yurii,Razhyk, Bohdan,Semenov, Sergey,Starova, Viktoriia S.,Tananaiko, Oksana Yu.,Tarasenko, Karen,Tolmachev, Andrei A.,Trofymchuk, Serhii,Zaporozhets, Olga A.
p. 3110 - 3124
(2020/03/23)
Process for the preparation of polyhalogenated benzotrifluorides, benzotrichlorides and benzoyl chlorides and new trihalogenobenzotrichlorides and -benzoyl chlorides
Polyhalogenated benzotrifluorides can be reacted with chlorides from the series of Friedel-Crafts catalysts to give the corresponding benzotrichlorides, which can be hydrolysed by water in the presence of iron(III) chloride to give the corresponding benzoyl chlorides. These are suitable as intermediate products for the preparation of active compounds for medicaments and feed additives.
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(2008/06/13)
Process for the dechlorination and/or debromination of fluorine-and chlorine- and/or bromine-containing aromatic compounds
Fluorine- and chlorine- and/or bromine-containing aromatic compounds are dechlorinated and/or debrominated with hydrogen in an industrially advantageous and selective manner, if the palladium catalyst is present in stationary phase and the aromatic compound in gas phase.