Helvetica Chimica Acta

Eine einfache Synthese chiraler Arylbenzochinone und Arylbenzohydrochinone; Versucheines NMR.??Nachweises von Chiralität in isopropylsubstituierten …

E Schleusener, CH Eugster

Index: Schleusener,E.; Eugster,C.H. Helvetica Chimica Acta, 1972 , vol. 55, p. 986 - 1002

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Citation Number: 7

Abstract

Abstract Atropisomeric diphenyls (V and VI) are easily prepared by the acid catalysed condensation of 2-methoxycarbonyl-1, 4-benzoquinone and 2-acetyl-1, 4-benzoquinone and trimethyl-1, 4-benzoquinone respectively with 2-isopropyl-5-methylanisole and 2- isopropyl-3, 5dimethylanisole. The reaction is not affected by steric hindrance; the more highly substituted phenols gave better yields. One of the diphenylderivatives has been ...