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Journals and Conferences
4-Benzothiazol-2-ylamino-4-oxo-2-butenoic acid, prepared from reaction of 2-aminobenzothiazole and maleic anhydride, are used as an acid component in Passerini three-component reaction, under solvent-free media, to produce unsaturated α-benzothiazole acyloxyamides in good yields.
Environmentally method for the synthesis of 1,3-thiazole has been achieved by multicomponent reactions of primary amines, isothiosyanates and alkyl bromides under solvent-free conditions using nanorod ZnO structures as catalyst. These reactions were not performed without catalyst. The catalyst showed significant reusable activity.
An effective one-pot synthesis of dialkoxyphosphoryl-2-oxo-2H-pyran derivatives by three-component reaction of alky bromides and dialkyl acetylenedicarboxylates in the presence of trialkyl phosphite is described. The reactions were performed under solvent-free conditions at 50°C and neutral conditions and provided good yields of products.
Three- component reactions of 1-(6-hydroxy-2-isopropenyl-1-benzofuran-yl)-1-ethanone, aldehydes and malononitrile or ethyl cyanoacetate in the presence of nanoparticles of ZnO as catalyst are explained as effective and green synthetic method for generating 9H- furo[2,3-f]chromenes in good yield.
A convenient procedure for the preparation of 1-(1-Propylsulfonic)-3- methylimidazolium thiocyanate as a novel Brønsted acidic ionic liquid thiocyanation agent and highly efficient heterogeneous catalytic is described. This catalyst is used in regioselective thiocyanation of indoles, anilines, pyrroles and their derivatives (aromatic and heteroaromatic… (More)