Synthesis of ethyl ortho-substituted benzoylacetates and investigation of the influence of ortho-substituents on keto-enol tautomerism and MS fragmentation behaviour

D Sicker, G Mann

Index: Sicker, Dieter; Mann, Gerhard Collection of Czechoslovak Chemical Communications, 1988 , vol. 53, # 4 p. 839 - 850

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Citation Number: 8

Abstract

Abstract A series of seven ethyl 2-acetyl-(2-substituted benzoyl) acetates II-VIII was synthesized, together with their parent compound I, from the corresponding acid chlorides. The tautomerism of these β-tricarbonyl compounds in tetrachloromethane was studied by 1 H NMR spectroscopy and former results concerning this problem were critically evaluated. A further series of seven ortho-substituted ethyl benzoylacetates X-XV and XVII was ...