Relay Catalytic Branching Cascade: A Technique to Access Diverse Molecular Scaffolds
作者:Nitin T. Patil、Valmik S. Shinde、Balasubramanian Sridhar
DOI:10.1002/anie.201208738
日期:2013.2.18
Skeletal diversity: The reactions of alkynoic acids (A, common type of substrates) with various scaffold‐building agents (B) under gold catalysis produce a series of multifunctional polyheterocyclic structures (see scheme). The approach enables the preparation of compound libraries with high skeletal diversity.
Acid mediated coupling of aliphatic amines and nitrosoarenes to indoles
作者:Subhra Kanti Roy、Anisha Purkait、Sk Md Tarik Aziz、Chandan K. Jana
DOI:10.1039/c9cc09616g
日期:——
or azo compounds. Herein, we report an acid mediated annulation reaction of aliphatic amines and nitrosoarenes to provide indole derivatives. The elusive directannulation of aliphatic amines and nitrosoarenes via simultaneous C-C and C-N bond formation was achieved under metal free conditions. This conceptually novel method for indolesynthesis does not require pre-functionalization steps for the
Three-Component Tandem-Intramolecular Hydroamination Reactions in One Pot Involving Indoles, 2-Aminobenzyl Alcohols, and 2-Alkynylbenzaldehydes: Consecutive 7-<i>endo</i>-<i>trig</i>and Electrophilic 6-<i>endo</i>-<i>dig</i>Cyclizations
作者:Srinivas Samala、Mohammad Saifuddin、Anil K. Mandadapu、Bijoy Kundu
DOI:10.1002/ejoc.201300100
日期:2013.6
A one-pot protocol for the synthesis of indole-based annulated polyheterocycles involvingconsecutive 7-endo-trig and electrophilic 6-endo-dig cyclizations is described. The reaction proceeds initially through annulation of 5-methoxyindole, 2-amino benzyl alcohol and 2-alkynylbenzaldehyde
Developing 3-(2-Isocyano-6-methylbenzyl)-1<i>H</i>-indole Derivatives to Enhance the Susceptibility of <i>Serratia marcescens</i> by Occluding Quorum Sensing
Quorumsensing (QS) inhibition is recognized as a novel antimicrobial target for infections caused by drug-resistant pathogens and is an attractive strategy for antipathogenic agent development. We designed and synthesized three parts of 3-(2-isocyanobenzyl)-1H-indole derivatives and tested their activity as novel quorumsensing inhibitors (QSIs). 3-(2-Isocyanobenzyl)-1H-indole derivatives demonstrated
Direct annulation and alkylation of indoles with 2-aminobenzyl alcohols catalyzed by TFA
作者:Forest J. Robertson、Bradshaw D. Kenimer、Jimmy Wu
DOI:10.1016/j.tet.2011.02.067
日期:2011.6
An efficient method for the annulation of indoles with 2-aminobenzyl alcohols, catalyzed by TFA, to furnish 5,6-fused indoline aminals is reported. This method can be extended to the alkylation of indoles at C3. 2-Aminobenzyl alcohols are used directly without recourse to protection of the aniline nitrogen or activation of the alcohol. (C) 2011 Elsevier Ltd. All rights reserved.