The synthesis of sulfonated 4<i>H</i>-3,1-benzoxazines <i>via</i> an electro-chemical radical cascade cyclization
作者:Tian-Jun He、Wei-Qiang Zhong、Jing-Mei Huang
DOI:10.1039/c9cc09551a
日期:——
A new route for the synthesis of sulfonated 4H-3,1-benzoxazines has been accomplished by electrochemical radical cascade cyclizations of styrenyl amides with sulfonylhydrazines. This process demonstrates a wide substrate scope with diverse functional group compatibility under metal- and external oxidant-free conditions at ambient temperature.
Electrochemical oxidative cascade cyclization of olefinic amides and alcohols leading to the synthesis of alkoxylated 4<i>H</i>-3,1-benzoxazines and indolines
作者:Wan-Jie Wei、Lei Zhan、Cai-Na Jiang、Hai-Tao Tang、Ying-Ming Pan、Xian-Li Ma、Zu-Yu Mo
DOI:10.1039/d2gc04645h
日期:——
Synthesis technologies can be used directly and selectively to construct two different heterocycles from one substrate. Herein, we introduce a mild and efficient electrochemical oxidative strategy to construct alkoxylated 4H-3,1-benzoxazines and indolines. High atom efficiency and transition metal- and oxidant-free conditions are the striking features of this protocol. In a simple undivided cell, various
可以直接和选择性地使用合成技术从一种底物构建两种不同的杂环。在此,我们介绍了一种温和高效的电化学氧化策略来构建烷氧基化 4 H -3,1-苯并恶嗪和二氢吲哚。高原子效率和无过渡金属和氧化剂的条件是该协议的显着特征。在一个简单的未分隔电池中,各种烯烃酰胺和醇反应生成 40 种苯并恶嗪和二氢吲哚。这种自由基级联反应为一步构建 C-O 键提供了一种简便的方法。此外,大多数化合物对肿瘤细胞系表现出良好的抑制活性。
Capozzi, Giuseppe; Ottana, Rosaria; Romeo, Giovanni, Journal of Chemical Research, Miniprint, 1986, # 6, p. 1801 - 1833
作者:Capozzi, Giuseppe、Ottana, Rosaria、Romeo, Giovanni、Valle, Giovanni
DOI:——
日期:——
Electrochemical oxythiocyanation of ortho-olefinic amides: Access to diverse thiocyanated benzoxazines