Nuclear Magnetic Resonance (NMR), Infrared (IR) and Mass Spectrometry (MS) study of keto-enol tautomerism of isobenzofuran-1(3H)-one derivatives
作者:Diego Arantes Teixeira Pires、Wagner Luiz Pereira、Róbson Ricardo Teixeira、José Daniel Figueroa-Villar、Claudia Jorge do Nascimento
DOI:10.1016/j.molstruc.2016.02.015
日期:2016.6
Abstract The keto-enol tautomerism of 3-(2-hydroxy-4,4-dimethyl-6-oxo-cyclohexen-1-yl)isobenzofuran-1(3H-one (1), 3-(2-hydroxy-6-oxocyclohex-1-enyl)isobenzofuran-1(3H)-one (2), 3-(2-hydroxy-4-methyl-6-oxocyclohex-1-enyl)isobenzofuran-1(3H)-one (3), 3-(2-hydroxy-5-oxocyclopent-1-enyl)isobenzofuran-1(3H)-one (4) and 2-(3-oxo-1,3-dihydroisobenzofuran-1-yl)-1H-indene-1,3(2H)-dione (5) were investigated
摘要 3-(2-hydroxy-4,4-dimethyl-6-oxo-cyclohexen-1-yl)isobenzofuran-1(3H-one (1), 3-(2-hydroxy-6- oxocyclohex-1-enyl)isobenzofuran-1(3H)-one (2), 3-(2-hydroxy-4-methyl-6-oxocyclohex-1-enyl)isobenzofuran-1(3H)-one (3), 3 -(2-hydroxy-5-oxocyclopent-1-enyl)isobenzofuran-1(3H)-one (4) 和 2-(3-oxo-1,3-dihydroisobenzofuran-1-yl)-1H-indene-1,研究了 3(2H)-二酮 (5)。我们注意到,对于化合物 1 到 4,在固体、溶液或气相中仅观察到烯醇形式。它们的互变异构平衡不受溶剂、温度或物理条件的影响。状态。在溶液