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Non-isocyanate polyurethanes synthesized from terpenes using thiourea organocatalysis and thiol-ene-chemistry
The depletion of fossil resources as well as environmental concerns contribute to an increasing focus on finding more sustainable approaches for the...
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Organocatalysis: A Versatile Tool for Asymmetric Green Organic Syntheses
An organocatalyst can be defined as small organic molecules, which can catalyze a wide range of important asymmetric organic transformations without...
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New chiral N-heterocyclic olefin bifunctional organocatalysis in α-functionalization of β-ketoesters
N -heterocyclic olefins (NHOs) possess an electron-rich and highly polarized C=C double bond due to the donating property of nitrogen atoms. This...
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Highly active organocatalyst from a trivalent phosphazenium salt for ring-opening copolymerization of epoxides and cyclic anhydrides enhanced by hydrogen bonding interactions
It is highly desirable to develop simple organocatalysts for the controlled ring-opening alternating copolymerization (ROAC) of epoxides and cyclic...
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Asymmetric Epoxidation of Unfunctionalized Olefins Using Novel Chiral Dihydroisoquinolinium Salts as Organocatalysts
AbstractTwo new non-racemic chiral dihydroisoquinolinium salts with N -substituents bulkier than a methyl group have been synthesized from (1 S ,2 R )-nor...
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Asymmetric Michael reaction between aldehydes and nitroalkanes promoted by pyrrolidine-containing C2-symmetric organocatalysts
Bifunctional C 2 -symmetric organocatalysts derived from chiral 1,2-diaminoethanes and ( S )-2-aminomethylpyrrolidine were fi rst used for promoting the...
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Chiral Polymer-Mediated Pd@MOF-808 for Efficient Sequential Asymmetric Reaction
The design and construction of organocatalysts that combined the homogeneous and heterogeneous natures to realize efficient catalysis are highly...
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Reversible Chain Transfer Catalyzed Polymerization with Alkyl Iodides Generated from Alkyl Bromides by in Situ Halogen Exchange
Reversible chain transfer catalyzed polymerization (RTCP) is a practical and efficient process for the precise synthesis of polymers with special...
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Continuous flow organocatalyzed methoxycarbonylation of benzyl alcohol derivatives with dimethyl carbonate
An organocatalytic continuous flow process is presented for the preparation of non-symmetric benzyl carbonate derivatives. The procedure relies on...
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Readily Prepared and Tunable Ionic Organocatalysts for Ring-opening Polymerization of Lactones
Highly potent ionic organocatalyst is developed for room-temperature controlled ring-opening polymerization (ROP) of lactones, including δ -valerolacto...
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Modern Approaches to Synthetic Design of Chiral α-Tertiary Amines Based on Trifluoromethylcontaining Ketimines: A Review
Enantioselective construction methods of chiral derivatives of α-tertiary amines using acyclic and cyclic trifluoromethylketimines are considered....
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Ionic liquid-based nanocomposites for organic transformations
In this review, catalyst as well as solvent nature of ionic liquids in organic transformations has been described. Ionic liquids have been...
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Nickel-catalysed enantioselective hydrosulfenation of alkynes
Enantioenriched sulfoxides have found ever-increasing applications in marketed drugs or as candidates in clinical trials. They are also frequently...
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Dendrimeric α,β-dipeptidic conjugates as organocatalysts in the asymmetric Michael addition reaction of isobutyraldehyde to N-phenylmaleimides
AbstractA series of polyester dendrimers (1G to 3G generation) based on 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoic acid (bis-MPA) and the core of...
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Synthesis, Characterization and DFT-D Studies of 2-Aminoethoxycalix[4]resorcinarenes: A Novel Heterogeneous Organocatalyst
The present article reports the synthesis of two novel supramolecular architectures, Phenyl(octa-2-aminoethoxy)calix[4]resorcinarene and...
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Metal-Free a Simple and Versatile N → B Dative Bond Stabilized Boron-Based Catalysts for Transfer Hydrogenation of Aromatic Ketones
In this study, novel boron-containing salen ligands (1 and 2) and their tetra-coordinated boron-based polymers (1a-b and 2a-b) containing N → B...
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Crystalline salicylic acid as an efficient catalyst for ultrafast Paal–Knorr pyrrole synthesis under microwave induction
AbstractIn this study, the viability of a wide range of crystalline aromatic and aliphatic carboxylic acids as organocatalysts has been investigated...
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