Results 81 to 90 of about 6,365 (202)

Ionic Liquid-Supported (ILS) (S)-Pyrrolidine Sulfonamide, a Recyclable Organocatalyst for the Highly Enantioselective Michael Addition to Nitroolefins

open access: yes, 2016
A new class of ionic liquid supported (ILS) (S)-pyrrolidine sulfonamide organocatalyst has been developed and shown to be a very effective catalyst for the asymmetric Michael addition reactions of ketones and aldehyde to nitroolefins with high enantio ...
Qianying Zhang (2391760)   +3 more
core   +1 more source

Computational Design of an Electro-Organocatalyst for Conversion of CO2 into Formaldehyde

open access: yes
Density functional theory calculations employing a hybrid implicit/explicit solvation method were used to explore a new strategy for electrochemical conversion of CO2 using an electro-organocatalyst.
Foroogh Khezeli (18066028)   +1 more
core   +1 more source

Sulfonated polyaniline as a solid organocatalyst for dehydration of fructose into 5-hydroxymethylfurfural

open access: yes, 2017
Sulfonated polyaniline with mutually reactive sulfonic acid groups and amine/imine represents an organocatalyst for effective production of 5-hydroxymethylfurfural (HMF) from carbohydrates in low-boiling solvents with complete restriction of HMF ...
Dianyong Tang   +6 more
core   +1 more source

Chiral Sodium Glycerophosphate Catalyst for Enantioselective Michael Reactions of Chalcones

open access: yesMolecules
A chiral sodium glycerophosphate is successfully exploited as a catalyst in the Michael addition of methyl malonate to a number of chalcones. The reactions supplied the target adducts in satisfactory yields and good enantiomeric excesses.
Giovanni Ghigo   +3 more
doaj   +1 more source

A Recyclable Fluorous Hydrazine‐1,2Bis(Carbothioate) Organocatalyst for the Synthesis of ꞵ‐Chloroethers with N‐Chlorosuccinimide

open access: yes, 2017
A novel fluorous hydrazine‐1,2‐bis(carbothioate) was prepared. It showed good catalytic activity in the synthesis of ꞵ‐chloroethers with N‐chlorosuccinimide under mild reaction conditions.
Yi‐Wei Zhu, Yi‐Xin Shi, Yu‐Qi Yin
core   +1 more source

Pyrrolidine−Thiourea as a Bifunctional Organocatalyst:  Highly Enantioselective Michael Addition of Cyclohexanone to Nitroolefins

open access: yes, 2016
Asymmetric Michael additions of cyclohexanone to both aryl and alkyl nitroolefins in the presence of 20 mol % of organocatalyst 2b and 10 mol % of n-butyric acid afford adducts 5 with high diastereoselectivities and ...
Yong Tang (161879)   +3 more
core   +1 more source

A Facile Catalytic Route for the Preparation of Poly(methyl acrylate)/Clay Nanocomposites

open access: yesMacromolecular Materials and Engineering
Polymer–clay nanocomposites have attracted considerable attention due to their enhanced thermal, mechanical, and structural properties compared to conventional polymer materials.
Seda Bekin Acar   +3 more
doaj   +1 more source

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