initially the fabrication of a single-atom photocatalyst Ni/TiO2 for the visible-light-induced site-selective sulfonation of enamides to give amidosulfones with 36 examples up to 99% yield. The experimental results show that this single-atom photocatalyst Ni/TiO2 can achieve site-selective sulfonation of enamide to construct α-amidosulfones and β-propionamidosulfones under visible light. Importantly, such
单原子光催化作为一种重要的有机转化策略已受到越来越多的关注,其性能很大程度上取决于催化剂的设计。该方案最初涉及制造单原子光催化剂Ni / TiO 2,用于可见光诱导的酰胺的位点选择性磺化,以产生酰胺化砜,其中36个实例的收率高达99%。实验结果表明,该单原子光催化剂Ni / TiO 2可以在可见光下实现酰胺的定点磺化,从而构建α-酰胺基砜和β-丙酰胺基砜。重要的是,这种基于单原子光催化的合成系统显示出良好的可回收性,高周转数(最多18 963),对官能团的优异耐受性,并且可以容易地按比例放大并具有良好的效率。
Michael Addition of<i>p</i>-Styrenesulfinate to Acrylic Compounds
Acrylic compounds CH2=CHX, where X represents -COOH, –CONH2, –CN, and –COOCH2CH2OH, were converted into the corresponding 3-(p-vinylphenylsulfonyl)- and 3-(p-tolylsulfonyl)propionic acids and their derivatives by the Michael addition with p-styrene- and p-toluenesulfinates, respectively, in the presence of acid as proton source.
Sulfone als chemische Transportformen germicid wirkender Stoffe, 9. Mitt. Sulfonylderivate von N-Mannich-Basen
作者:Paul Messinger、Judith Gompertz
DOI:10.1002/ardp.19783110108
日期:——
Die Titelverbindungen 4 werden durch Mannich‐Reaktion mit β‐Sulfonylcarbonsäureamiden 3 erhalten. Die α‐Aminosulfone 6 entstehen in einer reversiblen Reaktion aus Sulfinsäure 2 mit Bis‐imido‐Mannich‐Basen 5.