Chemische Berichte

Die Fries??Umlagerung als Gleichgewichtsreaktion

F Effenberger, R Gutmann

Index: Effenberger, Franz; Gutmann, Rainer Chemische Berichte, 1982 , vol. 115, # 3 p. 1089 - 1102

Full Text: HTML

Citation Number: 37

Abstract

Abstract Die Fries-Umlagerung von Arylbenzoaten 1–in 1, 2-Dichlorethan mittels Trifluormethansulfonsäure als Katalysator–zu (ortho-und para-Hydroxyaryl) phenylketonen 2 bzw. 3 ist bei 170 C reversibel und führt zu Gleichgewichtsgemischen aus 1, 2 und 3. Das Gleichgewicht wird, von den Arylestern 1 und den Hydroxyaryl-ketonen 2 bzw. 3 ausgehend, gleichermaßen eingestellt. Die größere Stabilität der ortho-gegenüber den ...

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