aryldiyne derivatives with sulfonyl hydrazides in the presence of tetrabutylammonium iodide (TBAI) and tert-butyl hydroperoxide (TBHP) led to a cascade cyclization reaction to yield sulfonylated indeno[1,2-c]quinolines in moderate to good yields. The features of the methodology include metal-free reaction, the ease of reagent handling, and a broad functional group tolerance.
Palladium(II)-Catalyzed Intramolecular Diamination of Alkynes under Aerobic Oxidative Conditions: Catalytic Turnover of an Iodide Ion
作者:Bo Yao、Qian Wang、Jieping Zhu
DOI:10.1002/anie.201201640
日期:2012.5.21
“I” did it: A sequential intramolecular amination/N‐demethylation/amidation of internal acetylenes in the presence of a catalytic amount of Pd(OAc)2 and nBu4NI afforded indolo[3,2‐c]isoquinolinones under mild aerobic conditions (see scheme, DMSO=dimethyl sulfoxide). The iodide ion was regenerated by reaction of in situ generated MeI with HOAc present in the reaction mixture.
“我”做到了:在催化量的Pd(OAc)2和n Bu 4 NI存在下,通过顺序进行分子内胺化/ N-去甲基化/内部乙炔酰胺化,在轻度需氧条件下提供了吲哚[3,2- c ]异喹啉酮条件(参见方案,DMSO =二甲基亚砜)。通过原位生成的MeI与反应混合物中存在的HOAc反应,可再生碘离子。
Domino C–N Bond Formation via a Palladacycle with Diaziridinone. An Approach to Indolo[3,2-<i>b</i>]indoles
作者:Sudarshan Debnath、Lingli Liang、Mei Lu、Yian Shi
DOI:10.1021/acs.orglett.1c00466
日期:2021.5.7
Palladium-catalyzed C–N bond formation is one of the widely used transformations for the synthesis of structurally diverse N-heterocycles. This work describes an efficientpalladium-catalyzed multiple-C–N bond formation reaction for the synthesis of highly π-conjugated N-heterocycles, indolo[3,2-b]indoles with di-tert-butyldiaziridinone. The reaction likely proceeds through the initial formation of
钯催化的C–N键形成是合成结构多样的N-杂环的一种广泛使用的转化方法。这项工作描述了一种高效的钯催化的多C–N键形成反应,用于合成高度π共轭的N-杂环,吲哚[3,2- b ]吲哚与二叔丁基二氮杂吡啶酮。该反应可能通过亲核氨基palpalation初步形成吲哚稠合的palladacycle并随后进行双酰胺化反应而进行,从而得到吲哚[3,2- b ]吲哚。
<i>N</i>-Methyl Transfer Induced Copper-Mediated Oxidative Diamination of Alkynes
作者:Hon Eong Ho、Kazuaki Oniwa、Yoshinori Yamamoto、Tienan Jin
DOI:10.1021/acs.orglett.6b01067
日期:2016.5.20
diamination of bis(2-aminophenyl)acetylene for the synthesis of the structurally intriguing π-conjugated polyheterocyclic scaffold, 5,10-dihydroindolo[3,2-b]indole (DHII), has been developed under Cu(hfacac)2/O2 oxidation systems. The structure design of bis(2-aminophenyl)acetylene bearing both N,N-dimethylamine and primary amine groups is crucial for constructing the corresponding DHII scaffold. Notably, an
在Cu(hfacac)下开发了一种新颖的双(2-氨基苯基)乙炔分子内氧化加氨方法,用于合成结构吸引人的π-共轭多杂环骨架5,10-二氢吲哚[3,2- b ]吲哚(DHII)。 )2 / O 2氧化系统。带有N,N-二甲基胺和伯胺基团的双(2-氨基苯基)乙炔的结构设计对于构建相应的DHII支架至关重要。值得注意的是,分子间ñ -甲基从氮原子转移Ñ,Ñ-将二甲胺转化为伯胺,这对于成功实施本发明的成环方法是至关重要的步骤。