Apparent Carbon Monoxide Insertion<i>via</i>Double Isocyanide Incorporation during Palladium-Catalyzed Construction of Indoloquinoline Ring in a Single Pot: Synthesis of New Cytotoxic Agents
isocyanide units during a palladium‐catalyzed construction of the indoloquinoline ring afforded N‐substituted 6H‐indolo[2,3‐b]quinoline‐11‐carboxamides as new cytotoxic agents. The solvent and base play a key role in the selective and unprecedented synthesis of this class of amides.
在吲哚喹啉环的钯催化构建过程中通过结合两个异氰酸酯单元形成酰胺键,从而提供了N-取代的6 H-吲哚并[2,3 - b ]喹啉-11-羧酰胺作为新的细胞毒性剂。溶剂和碱在此类酰胺的选择性和空前的合成中起关键作用。
Palladium-Catalyzed Allenamide Carbopalladation/Allylation with Active Methine Compounds
作者:Xiaoyi Zhu、Ruibo Li、Hequan Yao、Aijun Lin
DOI:10.1021/acs.orglett.1c01369
日期:2021.6.18
carbopalladation/allylation with active methine compounds has been developed. Various indoles and isoquinolinones bearing a quaternary carbon center were achieved with good efficiency, a broad substrate scope and good functional group tolerance. This reaction underwent cascade oxidative addition, carbopalladation, and allylicalkylation, and two new C–C bonds were formed in one pot.
Supported palladium nanoparticles-catalyzed decarboxylative coupling approaches to aryl alkynes, indoles and pyrrolines synthesis
作者:C. Bal Reddy、Richa Bharti、Sandeep Kumar、Pralay Das
DOI:10.1039/c6ra12046f
日期:——
The polystyrene supported palladium (Pd@PS) nanoparticles (NPs) catalyzed decarboxylative coupling (DC) of arylhalides and alkynyl carboxylic acids was developed for the synthesis of diaryl alkynes. Indole and 3-pyrroline heterocycles were also synthesized from 2-iodo anilines/amino benzocycloheptene bromide and alkynyl carboxylic acids, following a domino decarboxylative coupling-cyclization (DCC)
A conceptually new and straightforward introduction of sulfonyl groups at the C-7 position of an indole ring has been achieved via AlCl3 mediated unexpected regioselective sulfonyl group migration for N-alkyl/aryl/heteroarylsulfonyl indoles affording potential inhibitors of Mycobacterium tuberculosis H37Rv chorismate mutase.