Amino Acid Promoted CuI-Catalyzed C−N Bond Formation between Aryl Halides and Amines or N-Containing Heterocycles
摘要:
CuI-catalyzed coupling reaction of electron-deficient aryl iodides with aliphatic primary amines occurs at 40 degrees C under the promotion of N-methylglycine. Using L-proline as the promoter, coupling reaction of aryl iodides or aryl bromides with aliphatic primary amines, aliphatic cyclic secondary amines, or electron-rich primary arylamines proceeds at 60-90 degrees C; an intramolecular coupling reaction between aryl chloride and primary amine moieties gives indoline at 70 degrees C; coupling reaction of aryl iodides with indole, pyrrole, carbazole, imidazole, or pyrazole can be carried out at 75-90 degrees C; and coupling reaction of electron-deficient aryl bromides with imidazole or pyrazole occurs at 60-90 degrees C to provide the corresponding N-aryl products in good to excellent yields. In addition, N,N-dimethylglycine promotes the coupling reaction of electron-rich aryl bromides with imidazole or pyrazole to afford the corresponding N-aryl imidazoles or pyrazoles at 110 degrees C. The possible action of amino acids in these coupling reactions is discussed.
申请人:Industry-University Cooperation Foundation Hanyang University ERICA Campus 한양대학교 에리카산학협력단(120120008551) Corp. No ▼ 131471-0017977BRN ▼134-82-10205
公开号:KR20200033606A
公开(公告)日:2020-03-30
본 발명은 산화적 만니히(Mannich) 고리반응을 순차적으로 이용하는 트로페인 알칼로이드 화합물 및 이의 제조방법에 관한 것이다. 본 발명은 하기의 화학식 1구조를 가지는 트로페인 알칼로이드 화합물을 제공한다. [화학식 1] (R은 H, o-OMe p-OMe, o,p-OMe, p-t-Bu, p-F 또는 p-Cl 이며, R는 H 또는 CHOCH)
a consecutive intermolecular hydride transfer process. A series of N-aryl pyrrolidines and N-aryl 1,2,3,4-tetrahydropyridines decorated with CF3 and carboxylicester functionalities are directly accessed in good yields from pyrrolidines and piperidines. This work pushes forward the application of the intermolecular hydride transfer strategy in one-step assembly of molecular complexity.
Sulfonamide-substituted chalcone derivatives and their use to treat diseases
申请人:Worsencroft J. Kimberly
公开号:US20050049236A1
公开(公告)日:2005-03-03
The invention relates to compounds, pharmaceutical compositions and methods of using compounds of the general formula
or its pharmaceutically acceptable salt or ester, wherein the substituents are defined in the application.
Catalytic and Aerobic Oxidative C−H Annulation Reaction of Saturated Cyclic Amines for Synthesis of Dipyrroloquinolines
作者:Kenji Matsumoto、Rina Nakano、Ken‐ichi Yamada、Tsukasa Hirokane、Masahiro Yoshida
DOI:10.1002/adsc.202201332
日期:2023.2.7
With the aim of providing an efficient platform for the one-step construction of nitrogen-containing polycyclic frameworks, we report a heterogeneous platinum-catalyzed oxidative α,β-C(sp3)−H dual functionalization of saturated cyclic amines. This method involves a tandem oxidative dehydrogenation/hetero Diels-Alder reaction under aerobic mild conditions, providing tetracyclic octahydro-dipyrroloquinoline
为了为含氮多环框架的一步构建提供一个有效的平台,我们报道了一种非均相铂催化的饱和环胺氧化 α,β-C(sp 3 )−H 双官能化。该方法涉及在有氧温和条件下的串联氧化脱氢/杂 Diels-Alder 反应,以良好的收率提供四环八氢-二吡咯并喹啉骨架。该反应应用于一步合成天然产物incargranine B aglycone和seneciobipyrrolidine。该研究以高度原子经济的方式提供了高效快速地获取含氮稠合四环化合物的途径。