Unusual Coupling Reactions of Aldehydes and Alkynes: A Novel Preparation of Substituted Phthalic Acid Derivatives by Automated Synthesis
作者:Axel Jacobi von Wangelin、Helfried Neumann、Dirk Gördes、Stefan Klaus、Haijun Jiao、Anke Spannenberg、Thomas Krüger、Christian Wendler、Kerstin Thurow、Norbert Stoll、Matthias Beller
DOI:10.1002/chem.200204668
日期:2003.5.23
Based upon a highly versatile multicomponent methodology, a new one-pot synthesis of substituted phthalic acid derivatives from alpha,beta-unsaturated aldehydes was developed. The reaction involves the intermediacy of an acetamidodiene species which undergoes Diels-Alder addition to diethyl acetylenedicarboxylate. The resultant acetamidocyclohexadiene is subject to elimination of acetamide under the
基于高度通用的多组分方法,开发了一种新的由一锅合成的α,β-不饱和醛取代邻苯二甲酸衍生物。该反应涉及乙酰胺二烯物质的中间体,该乙酰胺二烯物质经过乙炔二羧酸二乙酯的Diels-Alder加成反应。在反应条件下,将所得的乙酰氨基环己二烯除去乙酰胺,以高收率得到取代的邻苯二甲酸二乙酯。该多米诺缩合-环加成-消除序列已应用于多种α,β-不饱和醛。此外,我们证明了平行和自动化合成技术的开发可用于快速筛选反应条件和组成。