Copper(II) Triflate Promoted One-Pot Synthesis of Coumarin-, Quinolone-, and Naphthalene-Annulated 2-Aminothiazoles under Ligand-Free Conditions
作者:K. Majumdar、Nirupam De、Debankan Ghosh、Sudipta Ponra、B. Roy
DOI:10.1055/s-0031-1289608
日期:2012.1
An efficientsynthesis of new 2-aminothiazole-annulated compounds is described via copper(II) triflate promoted sequential condensation, arylation, and heterocyclization reactions in one step. The reaction is compatible with a variety of substrates providing efficient access to many biologically important skeletons in good yields. copper triflate -multicomponent reaction - naphthothiazole - domino
A Green Approach to 2-Substituted Benzo- and Naphthothiazoles via N-bromosuccinimide/Bromide-Mediated C(aryl)-S Bond Formation
作者:Ainka T. Brown、Nadale K. Downer-Riley
DOI:10.3390/molecules27227876
日期:——
coupling of isothiocyanates with amines under mild conditions using N-bromosuccinimide/tetrabutylammonium bromide in 1,2-dimethoxyethane (DME) under ambient conditions. The reactions produce moderate to excellent yields with good functional group tolerance and avoid the use of harsh thermal conditions, corrosive reagents, halogenated solvents, toxic metal salts, and expensive metal catalysts, and are amenable