在此,我们公开了一种新型的铜催化末端炔烃与邻氨基苯酚的C(sp)-H芳基胺化反应,能够快速生成高反应性仲N-芳基炔胺,用于结构多样的C2取代喹啉和2-喹啉酮的模块化合成。原位形成的羰基烯胺易于互变异构为羰基烯酮亚胺,可与一系列亲核试剂,包括胺、醇、酚、硫醇、苯硫酚、活性亚甲基化合物,甚至水有效反应,生成各种喹啉衍生物,产生 H 2 O 作为唯一的绿色副产品。该方法还开辟了创建各种喹啉稠合杂环的实用途径,并可成功应用于复杂分子的后期修饰和生物活性靶标的简洁合成。机理研究揭示了使用邻氨基苯甲醚作为新型芳基氮烯前体的铜催化内球氮烯转移过程。
Cp*Co(III)‐Catalyzed
<i>o</i>
‐Amidation of Benzaldehydes with Dioxazolones Using Transient Directing Group Strategy
作者:Bhuttu Khan、Vikas Dwivedi、Basker Sundararaju
DOI:10.1002/adsc.201901267
日期:2020.3.4
metal‐catalyzed ortho‐selective C(sp2)−H amidation of weakly coordinating aldehydes remains limited to precious metals such as Ir, Rh, Ru, etc. Herein, we put forward a novel report on ortho‐amidation of benzaldehydes employing user‐friendly dioxazolones under cost‐effective and air‐stable Cp*Co(III) catalysis. This catalytic transformation involves transient directing group strategy to enhance the ligating
Facile Synthesis of 3-Substituted and 1,3-Disubstituted Quinolin-2(1H)-ones from 2-Nitrobenzaldehydes
作者:Kwanghee Koh Park、Jin Young Jung
DOI:10.3987/com-05-10462
日期:——
Experimental and computational studies on H<sub>2</sub>O-promoted, Rh-catalyzed transient-ligand-free <i>ortho</i>-C(sp<sup>2</sup>)–H amidation of benzaldehydes with dioxazolones
We develop an efficient and convenient ligand-free, rhodium-catalyzed ortho-C(sp2)–H amidation of benzaldehydes with dioxazolones using H2O as the key promoter.
Copper-catalyzed C(sp)–H aryl amination enables modular synthesis of quinolines and 2-quinolinones
作者:Yang Gao、Haixia Li、Simin Yang、Yanping Huo、Qian Chen、Xianwei Li、Zhe Wang、Xiao-Qiang Hu
DOI:10.1007/s11426-023-1739-y
日期:2024.2
Herein, we disclose a novel copper-catalyzed C(sp)–H aryl amination of terminal alkynes with anthranils, enabling the rapid generation of highly reactive secondary N-aryl ynamines for the modular synthesis of structurally diverse C2-substituted quinolines and 2-quinolinones. The in-situ formed carbonyl-ynamines are prone to tautomerize to carbonyl-ketenimines, which can efficiently react with a series
在此,我们公开了一种新型的铜催化末端炔烃与邻氨基苯酚的C(sp)-H芳基胺化反应,能够快速生成高反应性仲N-芳基炔胺,用于结构多样的C2取代喹啉和2-喹啉酮的模块化合成。原位形成的羰基烯胺易于互变异构为羰基烯酮亚胺,可与一系列亲核试剂,包括胺、醇、酚、硫醇、苯硫酚、活性亚甲基化合物,甚至水有效反应,生成各种喹啉衍生物,产生 H 2 O 作为唯一的绿色副产品。该方法还开辟了创建各种喹啉稠合杂环的实用途径,并可成功应用于复杂分子的后期修饰和生物活性靶标的简洁合成。机理研究揭示了使用邻氨基苯甲醚作为新型芳基氮烯前体的铜催化内球氮烯转移过程。