[(Salcen)CrIII + Lewis base]-catalyzed synthesis of N-aryl-substituted oxazolidinones from epoxides and aryl isocyanates

2014 ◽  
Vol 50 (96) ◽  
pp. 15187-15190 ◽  
Author(s):  
Robert L. Paddock ◽  
Debashis Adhikari ◽  
Richard L. Lord ◽  
Mu-Hyun Baik ◽  
SonBinh T. Nguyen
Keyword(s):  
Cycloaddition Reaction ◽  
Catalyst System ◽  
Lewis Base ◽  
Selective Catalyst ◽  
Highly Active ◽  
Aryl Isocyanates

[(Salcen)CrIII + Lewis base] was found to be a highly active and selective catalyst system in the [2+3] cycloaddition reaction between epoxides and isocyanates to form 5-oxazolidinones.

A Highly Active and Selective Catalyst System for the Baylis–Hillman Reaction

2003 ◽  
Vol 42 (41) ◽  
pp. 5054-5056 ◽  
Author(s):  
Jingsong You ◽  
Juhua Xu ◽  
John G. Verkade
Keyword(s):  
Catalyst System ◽  
Selective Catalyst ◽  
Highly Active

A Highly Active and Selective Catalyst System for the Baylis–Hillman Reaction

2003 ◽  
Vol 115 (41) ◽  
pp. 5208-5210 ◽  
Author(s):  
Jingsong You ◽  
Juhua Xu ◽  
John G. Verkade
Keyword(s):  
Catalyst System ◽  
Selective Catalyst ◽  
Highly Active

A Highly Active and Selective Catalyst System for the Baylis—Hillman Reaction.

ChemInform ◽  
2004 ◽  
Vol 35 (8) ◽  
Author(s):  
Jingsong You ◽  
Juhua Xu ◽  
John G. Verkade
Keyword(s):  
Catalyst System ◽  
Selective Catalyst ◽  
Highly Active

scholarly journals Highly Efficient MOF Catalyst Systems for CO2 Conversion to Bis-Cyclic Carbonates as Building Blocks for NIPHUs (Non-Isocyanate Polyhydroxyurethanes) Synthesis

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 628
Author(s):  
Adolfo Benedito ◽  
Eider Acarreta ◽  
Enrique Giménez
Keyword(s):  
Molar Mass ◽  
Cycloaddition Reaction ◽  
Building Blocks ◽  
Catalyst System ◽  
Cyclic Carbonate ◽  
Ammonium Bromide ◽  
Cyclic Carbonates ◽  
High Molar Mass ◽  
Highly Efficient ◽  
Free Process

The present paper describes a greener sustainable route toward the synthesis of NIPHUs. We report a highly efficient solvent-free process to produce [4,4′-bi(1,3-dioxolane)]-2,2′-dione (BDC), involving CO2, as renewable feedstock, and bis-epoxide (1,3-butadiendiepoxide) using only metal–organic frameworks (MOFs) as catalysts and cetyltrimethyl-ammonium bromide (CTAB) as a co-catalyst. This synthetic procedure is evaluated in the context of reducing global emissions of waste CO2 and converting CO2 into useful chemical feedstocks. The reaction was carried out in a pressurized reactor at pressures of 30 bars and controlled temperatures of around 120–130 °C. This study examines how reaction parameters such as catalyst used, temperature, or reaction time can influence the molar mass, yield, or reactivity of BDC. High BDC reactivity is essential for producing high molar mass linear non-isocyanate polyhydroxyurethane (NIPHU) via melt-phase polyaddition with aliphatic diamines. The optimized Al-OH-fumarate catalyst system described in this paper exhibited a 78% GC-MS conversion for the desired cyclic carbonates, in the absence of a solvent and a 50 wt % chemically fixed CO2. The cycloaddition reaction could also be carried out in the absence of CTAB, although lower cyclic carbonate yields were observed.

Synthesis of β-Lactones:  A Highly Active and Selective Catalyst for Epoxide Carbonylation

2002 ◽  
Vol 124 (7) ◽  
pp. 1174-1175 ◽  
Author(s):  
Yutan D. Y. L. Getzler ◽  
Viswanath Mahadevan ◽  
Emil B. Lobkovsky ◽  
Geoffrey W. Coates
Keyword(s):  
Selective Catalyst ◽  
Highly Active

Rapid synthesis of a PtRu nano-sponge with different surface compositions and performance evaluation for methanol electrooxidation

Nanoscale ◽  
2015 ◽  
Vol 7 (21) ◽  
pp. 9467-9471 ◽  
Author(s):  
Meiling Xiao ◽  
Ligang Feng ◽  
Jianbing Zhu ◽  
Changpeng Liu ◽  
Wei Xing
Keyword(s):  
Performance Evaluation ◽  
Electronic Effect ◽  
Catalyst System ◽  
Methanol Electrooxidation ◽  
Co Poisoning ◽  
Rapid Synthesis ◽  
Highly Active ◽  
Electro Oxidation ◽  
Pt Utilization ◽  
And Performance

A rapid strategy to synthesize a highly active PtRu alloy nano-sponge catalyst system for methanol electro-oxidation is presented. The greatly increased Pt utilization, anti-CO poisoning ability and electronic effect result from the porous nano-sponge structure.

scholarly journals Lewis acid- and/or Lewis base-catalyzed [3+2] cycloaddition reaction: synthesis of pyrazoles and pyrazolines

2008 ◽  
Vol 49 (48) ◽  
pp. 6768-6772 ◽  
Author(s):  
Palakodety Radha Krishna ◽  
Empati Raja Sekhar ◽  
Florence Mongin
Keyword(s):  
Lewis Acid ◽  
Cycloaddition Reaction ◽  
Lewis Base ◽  
Reaction Synthesis

ChemInform Abstract: Pd-Diimine: A Highly Selective Catalyst System for the Base-Free Oxidative Heck Reaction.

ChemInform ◽  
2011 ◽  
Vol 42 (32) ◽  
pp. no-no
Author(s):  
Aditya L. Gottumukkala ◽  
Johannes F. Teichert ◽  
Dorus Heijnen ◽  
Niek Eisink ◽  
Simon van Dijk ◽  
...  
Keyword(s):  
Heck Reaction ◽  
Catalyst System ◽  
Selective Catalyst

ChemInform Abstract: Synthesis of β-Lactones: A Highly Active and Selective Catalyst for Epoxide Carbonylation.

ChemInform ◽  
2010 ◽  
Vol 33 (29) ◽  
pp. no-no
Author(s):  
Yutan D. Y. L. Getzler ◽  
Viswanath Mahadevan ◽  
Emil B. Lobkovsky ◽  
Geoffrey W. Coates
Keyword(s):  
Selective Catalyst ◽  
Highly Active
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