Isochromenylium/Isoquinolinium-Mediated One-Pot Annulation to Hexahydropyrazinoisoquinolines. Synthesis of Quinocarcinol
作者:Tianyang Wang、Yikai Wang、Donghui Feng、Min Wang、Xiaoliang Yang、Zhu-Jun Yao
DOI:10.1021/acs.orglett.3c03368
日期:2023.12.15
A novel annulation protocol has been successfully developed in this work for the quick generation of 1,3,4,6,11,11a-hexahydro-2H-pyrazino[1,2-b]isoquinolines from easily accessible o-alkynylbenzaldehydes. Various hexahydropyrazinoisoquinolines, including those previously unavailable with electron-deficient substituents, have been achieved via the newly developed continuously operational isochromen
这项工作成功开发了一种新颖的环化方案,用于从容易获得的邻炔基苯甲醛快速生成 1,3,4,6,11,11a-六氢-2 H-吡嗪基[1,2- b ]异喹啉。各种六氢吡嗪基异喹啉,包括以前无法用缺电子取代基获得的六氢吡嗪异喹啉,已经通过新开发的连续操作的异色烯鎓/异喹啉鎓介导的程序获得。它还完美地充当了新的喹啉全合成中生成基本骨架的关键步骤,同时还伴随着直接后期立体选择性 sp 3 C-H 羟甲基化的开发和应用。