The present invention relates to processes for preparing certain 2-pyridones and 2-pyridinols, to novel compounds of these two types and to their use as biologically active compounds, in particular for controlling harmful microorganisms in crop protection, in the medicinal field and in the protection of materials.
Die vorliegende Erfindung betrifft Verfahren zum Herstellen von bestimmten 2-Pyridonen und 2-Pyridinolen, neue Verbindungen dieser beiden Typen sowie deren Verwendung als biologisch aktive Verbindungen, insbesondere zur Bekämpfung von schädlichen Mikroorganismen im Pflanzenschutz, im medizinischen Bereich und im Materialschutz.
Iron powder and tin/tin chloride as new reducing agents of Meerwein arylation reaction with unexpected recycling to anilines
作者:Ahmed B. Abdelwahab、Eslam R. El-Sawy、Gilbert Kirsch
DOI:10.1080/00397911.2019.1704786
日期:2020.2.16
of NaNO2/HCl was trapped by alkyl aryl radical to form oximes in the E configuration form. The presence of tin/tin chloride mixture in the reaction of the aryl diazonium salts with methyl vinyl ketone produced Michael products along with β-aryl methyl ketones. The predicted α-aryl methyl ketones from the reaction of isopropenyl acetate with the diazotized anilines were obtained using iron or tin/tin
摘要 开发了使用铁粉或锡/氯化锡混合物进行Meerwein芳基化反应的简单快速路线。在铁粉存在下,不同的芳基重氮盐与甲基乙烯基酮、丙烯酸酯和乙酸异丙烯酯反应。在甲基乙烯基酮的情况下,肟的生产被检测为丙烯酸酯的主要产物或与β-芳基甲基酮的混合物。由过量的 NaNO2/HCl 原位生成的 HNO2 被烷基芳基捕获,形成 E 构型形式的肟。在芳基重氮盐与甲基乙烯基酮的反应中锡/氯化锡混合物的存在产生迈克尔产物以及β-芳基甲基酮。使用铁或锡/锡氯化物混合物从乙酸异丙烯酯与重氮化苯胺的反应中获得预测的α-芳基甲基酮。图形概要