Organocatalysis is a very useful tool for the asymmetric synthesis of biologically or
pharmacologically active compounds because it avoids the use of noxious metals, which are …

The biocompatibility, specificity, and consistency of natural carbohydrate polymers in
catalyzing organic processes have garnered significant interest. For the production of …

Supported cinchone‐derived thioureas promote highly enantioselective aza‐Friedel‐Crafts
reaction of different naphthols with a variety of N‐Boc ketimines derived from isatin. The …

Novel styryl-substituted thioureas and squaramides were obtained in three steps from
commercially available 4-hydroxy-3, 5-dichloroaniline. These organocatalysts promote …

Several single enantiomer thioureas have been synthesized and have been converted to
their cyclic derivatives: 2-imino-thiazolidin-4-ones. The conformations of the thioureas have …

A novel chitosan-supported cinchona urea heterogeneous catalyst was developed for
asymmetric reaction. The catalytic activity of the chitosan-supported organocatalyst was …

A poly (ethylene glycol)(PEG) supported amino alcohol has been developed as a chiral
ligand to promote the copper-catalyzed asymmetric nitrolaldol reaction (Henry Reaction) …

Abstract Enantioenriched 3‐amino‐3‐substituted oxindoles have been obtained by addition
of different nucleophiles to N‐Boc ketimines derived from isatin catalyzed by chiral …

A series of chiral thiourea bearing multiple H-bond donors derived from hydroquinine has
been reported. The aza-Henry reaction of isatin-derived ketimines and long-chain …

Mesoporous chitosan‐grafted iron tetra (4‐carboxyphenyl) porphyrin catalyst (Fe
TCPP/mesp‐CTS) was prepared and investigated as a practical model for the nano‐cavity …