Anhydrides of Arylfuran and Arylpyran Pseudoacids: Formation and Structures; C–O Bond Lengths Trends in Pseudo o-Formylbenzoic Acid Derivatives
作者:Emily O’Loughlin、Edward J. Valente
DOI:10.1007/s10870-019-00798-1
日期:2019.9
dicyclohexylcarbodiimide activation and coupling. Derivatives of the cyclic forms of o-formylbenzoic acid, o-acetylbenzoic acid, 2-carboxyphenylacetaldehyde and of 4,4-dimethyl-3,4-dihydro-3-hydroxy-[1H]-isobenzopyran-1-one were formed including dipseudoanhydides and normal-pseudo anhydrides. Crystal and molecular structures for meso and (R,R/S,S)-bis(1[3H]-isobenzofuranone-3-yl)ether, (R,R/S,S)-bis(3-methyl-1[
探索了三种生产芳基呋喃和芳基吡喃假酸酐的方法。这些包括热脱水、光气或氯化亚砜活化和分解,以及二环己基碳二亚胺活化和偶联。形成了环状形式的邻甲酰基苯甲酸、邻乙酰苯甲酸、2-羧基苯乙醛和 4,4-二甲基-3,4-二氢-3-羟基-[1H]-异苯并吡喃-1-one 的衍生物,包括二假酸酐和正常的假酸酐。内消旋和 (R,R/S,S)-双(1[3H]-异苯并呋喃酮-3-基)醚的晶体和分子结构,(R,R/S,S)-双(3-甲基-1[ 3H]-isobenzofuranone-3yl)ether, meso (3,4-dihydro-[1H]-isobenzopyran-1-one-3-yl)ether, 3-benzoyloxy-1[3H]-isobenzofuranone, 3-benzoyloxy-3-甲基-1[3H]isobenzofuranone, 3-(4'-nitrobenzoyloxy)-4