A highly efficient Cu catalyst system for the radical reactions of α-bromocarbonyls

2017 ◽  
Vol 53 (36) ◽  
pp. 5017-5019 ◽  
Author(s):  
Yushi Noda ◽  
Takashi Nishikata
Keyword(s):  
Catalyst System ◽  
Radical Reactions ◽  
Atom Transfer ◽  
Highly Efficient ◽  
Cu Catalyst

A Cu/TPMA and diisopropylamine system realized highly efficient atom-transfer radical reactions (substitution and cyclization). A maximum TON of up to 25 000 was achieved.

ChemInform Abstract: A Highly Efficient Cu-Catalyst System for N-Arylation of Azoles in Water.

ChemInform ◽  
2012 ◽  
Vol 43 (40) ◽  
pp. no-no
Author(s):  
Deping Wang ◽  
Fuxing Zhang ◽  
Daizhi Kuang ◽  
Jiangxi Yu ◽  
Junhua Li
Keyword(s):  
Catalyst System ◽  
Highly Efficient ◽  
Cu Catalyst

A highly efficient Cu-catalyst system for N-arylation of azoles in water

2012 ◽  
Vol 14 (5) ◽  
pp. 1268 ◽  
Author(s):  
Deping Wang ◽  
Fuxing Zhang ◽  
Daizhi Kuang ◽  
Jiangxi Yu ◽  
Junhua Li
Keyword(s):  
Catalyst System ◽  
Highly Efficient ◽  
Cu Catalyst

scholarly journals Pseudo five-component synthesis of 2,5-di(hetero)arylthiophenes via a one-pot Sonogashira–Glaser cyclization sequence

2011 ◽  
Vol 7 ◽  
pp. 1499-1503 ◽  
Author(s):  
Dominik Urselmann ◽  
Dragutin Antovic ◽  
Thomas J J Müller
Keyword(s):  
Materials Science ◽  
Catalyst System ◽  
Direct Access ◽  
One Pot ◽  
Highly Efficient ◽  
Cu Catalyst ◽  
Efficient Route ◽  
Glaser Coupling

Based upon a consecutive one-pot Sonogashira–Glaser coupling–cyclization sequence a variety of 2,5-di(hetero)arylthiophenes were synthesized in moderate to good yields. A single Pd/Cu-catalyst system, without further catalyst addition, and easily available, stable starting materials were used, resulting in a concise and highly efficient route for the synthesis of the title compounds. This novel pseudo five-component synthesis starting from iodo(hetero)arenes is particularly suitable as a direct access to well-defined thiophene oligomers, which are of peculiar interest in materials science.

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.

Ruthenium catalysts bearing N-heterocyclic carbene ligands in atom transfer radical reactions

2003 ◽  
Vol 44 (32) ◽  
pp. 6011-6015 ◽  
Author(s):  
Aurore Richel ◽  
Sébastien Delfosse ◽  
Cédric Cremasco ◽  
Lionel Delaude ◽  
Albert Demonceau ◽  
...  
Keyword(s):  
Ruthenium Catalysts ◽  
Radical Reactions ◽  
Atom Transfer ◽  
Carbene Ligands

Carbon nanotube-promoted Co–Cu catalyst for highly efficient synthesis of higher alcohols from syngas

2005 ◽  
pp. 5094 ◽  
Author(s):  
Hong-Bin Zhang ◽  
Xin Dong ◽  
Guo-Dong Lin ◽  
Xue-Lian Liang ◽  
Hai-Yan Li
Keyword(s):  
Carbon Nanotube ◽  
Higher Alcohols ◽  
Efficient Synthesis ◽  
Highly Efficient ◽  
Cu Catalyst

scholarly journals A Highly Efficient Aromatic Amine Ligand/Copper(I) Chloride Catalyst System for the Synthesis of Poly(2,6-dimethyl-1,4-phenylene ether)

Polymers ◽  
2018 ◽  
Vol 10 (4) ◽  
pp. 350 ◽  
Author(s):  
Kisoo Kim ◽  
Min Shin ◽  
Yong Kim ◽  
Joong-In Kim ◽  
Young Kim
Keyword(s):  
Aromatic Amine ◽  
Catalyst System ◽  
Highly Efficient ◽  
Chloride Catalyst ◽  
Amine Ligand

scholarly journals Dimethylformamide-stabilised palladium nanoclusters catalysed coupling reactions of aryl halides with hydrosilanes/disilanes

RSC Advances ◽  
2019 ◽  
Vol 9 (30) ◽  
pp. 17425-17431 ◽  
Author(s):  
Tatsuki Nagata ◽  
Takeru Inoue ◽  
Xianjin Lin ◽  
Shinya Ishimoto ◽  
Seiya Nakamichi ◽  
...  
Keyword(s):  
Catalyst System ◽  
Aryl Halides ◽  
Coupling Reactions ◽  
Highly Efficient

A highly efficient and reusable Pd NCs catalyst system for silylation of aryl halides was developed.

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