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Relevant academic research and scientific papers

Carboxylative cyclization of a propargylic amine with co2 catalyzed by a silica-coated magnetite

By employing a silica-coated magnetite as a catalyst, a silica-catalyzed carboxylative cyclization of propargylic amines with carbon dioxide (CO2) proceeded to afford the corresponding 2-oxazolidinones. Moreover, after the reaction, the silica-coated magn

Silica-catalyzed carboxylative cyclization of propargylic amines with CO2

By employing only silica as a catalyst, the carboxylative cyclization of a propargylic amine with CO2 proceeded to afford the corresponding 2-oxazolidinone. MCM-41, which was a mesoporous silica, was found to be the most effective silica for th

METHOD FOR PRODUCING 2-OXAZOLIDINONES

PROBLEM TO BE SOLVED: To provide a novel method for producing 2-oxazolidinones useful as intermediates for medicines and agrochemicals. SOLUTION: There is provided a method for producing 2-oxazolidinones represented by the following general formula (II) f

Carboxylative Cyclization of Propargylic Amines with Carbon Dioxide?- Catalyzed by Poly(amidoamine)-Dendrimer-Encapsulated Gold Nanoparticles

We prepared gold nanoparticles encapsulated in poly(amidoamine) (PAMAM) dendrimers as templating agents. The resulting gold nanoparticles were used as catalysts for the carboxylative cyclization of propargylic amines with carbon dioxide to afford the corr

METHOD FOR PRODUCING 2-OXAZOLIDINONES

PROBLEM TO BE SOLVED: To provide a novel production method capable of producing 2-oxazolidinones useful as intermediates for medicines and agrochemicals. SOLUTION: There is provided a production method for obtaining 2-oxazolidinones represented by the for

An alkaline-resistant Ag(i)-anchored pyrazolate-based metal-organic framework for chemical fixation of CO2

An alkaline-resistant Ag(i)-anchored metal-organic framework has been achieved via postsynthetic modification of pyrazolate-based linkers. For the first time, the resultant MOF was completely heterogeneous and recyclable over at least ten cycles in cyclic

Unusual Missing Linkers in an Organosulfonate-Based Primitive-Cubic (pcu)-Type Metal-Organic Framework for CO2 Capture and Conversion under Ambient Conditions

A noninterpenetrated organosulfonate-based metal-organic framework (MOF) with a defective primitive-cubic (pcu) topology was successfully synthesized. The unusual missing linkers, along with the highest permanent porosity (～43%) in sulfonate-MOFs, offer a versatile platform for the incorporation of alkynophilic Ag(I) sites. The cyclic carboxylation of alkyne molecules (e.g., propargyl alcohol and propargyl amine) into α-alkylidene cyclic carbonates and oxazolidinones were successfully catalyzed by the use of Ag(I)-embedded sulfonate-MOF under atmospheric pressure of CO2. In all the three catalytic reactions using CO2 as a C1 feedstock, the highly robust sulfonate-based MOF catalyst exhibit at least three-cycle reusability.

Quaternary ammonium salt-catalyzed carboxylative cyclization of propargylic amines with CO2

By employing quaternary ammonium salts as catalysts, the carboxylative cyclization of the propargylic amines with CO2 proceeded to afford the corresponding 2-oxazolidinones. In particular, tetra-n-butylammonium fluoride was the most effective c

Synthesis of oxazolidinones by efficient fixation of atmospheric CO 2 with propargylic amines by using a silver/1,8-diazabicyclo[5.4.0] undec-7-ene (DBU) dual-catalyst system

This'll fix it: Efficient fixation of atmospheric CO2 has been achieved by the reaction of propargylic amines with a silver/DBU dual-catalyst system (see scheme). Various oxazolidinones were synthesized in moderate to good yields by using subst