Synthesis of the H-phosphonate dibenzo[d,f][1,3,2]dioxaphosphepine 6-oxide and the phospha-Michael addition to unsaturated compounds
作者:Johannes Lenz、Doris Pospiech、Hartmut Komber、Maxime Paven、Rolf Albach、Stamo Mentizi、Gerhard Langstein、Brigitte Voit
DOI:10.1016/j.tet.2019.01.045
日期:2019.3
phosphonate-containing compounds based on dibenzo[d,f][1,3,2]dioxaphosphepine 6-oxide (BPPO) is presented. BPPO is synthesized by a three–component condensation and is added to activated alkenes with systematically varied structure via phospha-Michael addition. Acrylates, α,β-unsaturated carboxylic acid diesters and benzoquinone are used as activated alkenes. The new compounds are characterized by 1H
提出了一系列基于二苯并[ d,f ] [1,3,2]二氧杂膦酸6-氧化物(BPPO)的含膦酸酯的化合物。BPPO由三组分缩合反应合成,并通过磷-迈克尔加成反应添加到结构系统变化的活化烯烃中。丙烯酸酯,α,β-不饱和羧酸二酯和苯醌用作活化的烯烃。这些新化合物的特征在于1 H,13 C和31 P NMR光谱。预想所制备的膦酸酯具有阻燃性能。