Aminocatalytic Cross-Coupling Approach via Iminium Ions to Different CC Bonds
作者:Nagaraju Mupparapu、Narsaiah Battini、Satyanarayana Battula、Shahnawaz Khan、Ram A. Vishwakarma、Qazi Naveed Ahmed
DOI:10.1002/chem.201405477
日期:2015.2.9
on the ability of such iminium cations to promote reactions via an iminium‐catalyzed or iminium‐equivalent pathway are apparently unavailable. Previously, tandem cross‐coupling reactions were reported, in which an iminium ion undergoes nucleophilic 1,2‐addition to give a putative three‐component intermediate that abstracts a proton in situ and undergoes self‐deamination followed by unprecedented DMSO/aerobic
Palladium-Catalyzed Synthesis of 3-Acylated Indoles Involving Oxidative Cross-Coupling of Indoles with α-Amino Carbonyl Compounds
作者:Ri-Yuan Tang、Xiao-Kang Guo、Jian-Nan Xiang、Jin-Heng Li
DOI:10.1021/jo402215s
日期:2013.11.15
selective C–N bond oxidative cleavage method to 3-acylated indoles by Pd-catalyzed oxidative cross coupling of indoles with α-aminocarbonylcompounds has been developed; moreover, one-pot synthesis of 3-acylated indoles from 2-ethynylanilines and α-aminocarbonylcompounds has also been established. Importantly, the products 3-acylated indoles can be used to construct polyheterocyclic compound, which can
The reaction of indole and β-carbonyl nitrile to generate dicarbonyl indoles has been developed. This process involves α-oxonation of the β-carbonyl nitrile, Friedel–Crafts reaction with indoles and retro-cyanohydrination form dicarbonyl indoles.