A facile synthesis of (Z)-1, 6-disubstituted-7H-benzo[b][1,5]diazonin-7-one derivatives via arylation-allylation-RCM pathway of anthranilamide and isatoic anhydride
作者:Motakatla Novanna、Sathananthan Kannadasan、Ponnusamy Shanmugam
DOI:10.1016/j.tetlet.2019.151163
日期:2019.10
A facile and efficient method has been developed for the synthesis of (Z)-6-allyl-1-phenyl-1,2,5,6-tetrahydro-7H-benzo[b][1,5]diazonin-7-one and (Z)-1,6-diphenyl-1,2,5,6-tetrahydro-7H-benzo[b][1,5]diazonin-7-one from anthranilamide via N-arylation/N-allylation and from isatoic anhydride via ring opening/N-arylation/N-allylation followed by ring closing metathesis using Grubbs-II catalyst as a key step
已经开发了一种简便高效的合成(Z)-6-烯丙基-1-苯基-1,2,5,6-四氢-7 H-苯并[ b ] [1,5]重氮素-7-的方法邻氨基苯甲酰胺经N-芳基化/ N-烯丙基化反应得到一个和(Z)-1,6-二苯基-1,2,5,6-四氢-7 H-苯并[ b ] [1,5]重氮素-7-经由开环/ N-芳基化/ N从异戊酸酐-烯丙基化,然后使用Grubbs-II催化剂作为关键步骤进行闭环复分解。发现在反应时间和产物产率方面,Grubbs-II催化剂优于Grubbs-I催化剂,并且开发的路线适合于合成苯并稠合的九元氮杂环。已经建立了具有受保护的胺和酰胺氮的二甲酰化底物的要求,以适合用于合成重氮酮衍生物的RCM。