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Convenient and efficient method for synthesis of substituted 2-amino-2-chromenes using catalytic amount of iodine and K2CO3 in aqueous medium
Abstract A convenient and efficient method for synthesis of substituted 2-amino-2-chromenes by the reaction of arylidenemalononitriles and 1-naphthol or via one-pot three-component condensation ofExpand
Polymer-supported zinc chloride: a highly active and reusable heterogeneous catalyst for one-pot synthesis of 2,4,5-trisubstituted imidazoles
A polymer-supported Lewis acid catalyst was prepared and found to be extremely efficient for the preparation of imidazole derivatives via three-component condensation of benzil, aldehydes, andExpand
Ytterbium perfluorooctanesulfonate as an efficient and recoverable catalyst for the synthesis of trisubstituted imidazoles
Abstract Synthesis of trisubstituted imidazoles was successfully accomplished using rare earth(III) perfluorooctanesulfonates (RE(OPf) 3 ), RE = Sc, Y, La–Lu as catalysts in fluorous solvents.Expand
Fluorous silica gel-supported perfluoro-tagged palladium nanoparticles catalyze Suzuki cross-coupling reaction in water
Abstract The Suzuki cross-coupling reactions using perfluoro-tagged palladium nanoparticles on fluorous silica gel (FSG) as catalyst, K 2 CO 3 as base and TBAB as additive in H 2 O affording theExpand
One-pot fluorination and asymmetric Michael addition promoted by recyclable fluorous organocatalysts
A novel one-pot fluorination and asymmetric Michael addition reaction sequence promoted by recyclable fluorous bifunctional cinchona alkaloid–thiourea organocatalysts is introduced for the synthesisExpand
Ytterbium perfluorooctanesulfonates catalyzed synthesis of benzimidazole derivatives in fluorous solvents
Abstract Catalytic condensation of o -phenylenediamine and aldehydes was accomplished using rare earth(III)perfluorooctane sulfonates (RE(OPf) 3 ), RE = Sc, Y, La ∼ Lu) as catalysts in fluorousExpand
An efficient synthesis of dihydrothiophene ureidoformamides by domino reactions of 1,3-thiazolidinedione under catalyst-free conditions
An efficient synthesis of dihydrothiophene ureidoformamides by the domino reactions of aldehydes, malononitrile, amines and 1,3-thiazolidinedione in PEG 400/H2O is studied. The reaction is free ofExpand
Efficient synthesis of 2-substituted azoles: radical C–H alkylation of azoles with dicumyl peroxide, methylarenes and cycloalkanes under metal-free condition
A simple and efficient synthesis of 2-substituted azoles by alkylation of azoles with dicumyl peroxide, methylarenes and cycloalkanes under metal-free condition has been developed. The transformationExpand
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