The Direct Carboxylation of Terminal Alkynes with Carbon Dioxide Using Copper-Conjugated Microporous Polymer as Catalyst

2013 ◽  
Vol 634-638 ◽  
pp. 612-615 ◽  
Author(s):  
Yong Xie ◽  
Bi Feng He ◽  
Nian Yu Huang ◽  
Wei Qiao Deng
Keyword(s):  
Atmospheric Pressure ◽  
Room Temperature ◽  
Cross Coupling ◽  
Terminal Alkynes ◽  
Feasible Method ◽  
Mild Conditions ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer ◽  
Propiolic Acid ◽  
Co2 Transformation

A Cu-conjugated microporous polymer catalyst (CMP-Cu) was designed and prepared via Sonogashira-Hagihara cross-coupling of 3,8-dibromo-1,10-phenanthroline with 1,3,5-triethyny benzene in toluene. The CMP-Cu showed a catalytic activity for direct carboxylation of terminal alkynes with CO2 in the presence of K2CO3/Cs2CO3 at mild conditions. Several propiolic acids (such as 3-phenylpropiolic acid, 3-(4-nitrophenyl)propiolic acid and 4,4-dimethyl-2-pentynoic acid) have been prepared in a simple and feasible method at room temperature and atmospheric pressure. This catalyst is attractive for CO2 transformation.

scholarly journals A New Heterogeneous Catalyst Obtained via Supramolecular Decoration of Graphene with a Pd2+ Azamacrocyclic Complex

Molecules ◽  
2019 ◽  
Vol 24 (15) ◽  
pp. 2714 ◽  
Author(s):  
Matteo Savastano ◽  
Paloma Arranz-Mascarós ◽  
Maria Paz Clares ◽  
Rafael Cuesta ◽  
Maria Luz Godino-Salido ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Self Assembly ◽  
Room Temperature ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Assembly Process ◽  
Efficient Catalyst ◽  
Mild Conditions ◽  
Cross Coupling Reaction ◽  
Green Procedure

A new G-(H2L)-Pd heterogeneous catalyst has been prepared via a self-assembly process consisting in the spontaneous adsorption, in water at room temperature, of a macrocyclic H2L ligand on graphene (G) (G + H2L = G-(H2L)), followed by decoration of the macrocycle with Pd2+ ions (G-(H2L) + Pd2+ = G-(H2L)-Pd) under the same mild conditions. This supramolecular approach is a sustainable (green) procedure that preserves the special characteristics of graphene and furnishes an efficient catalyst for the Cu-free Sonogashira cross coupling reaction between iodobenzene and phenylacetylene. Indeed, G-(H2L)-Pd shows an excellent conversion (90%) of reactants into diphenylacetylene under mild conditions (50 °C, water, aerobic atmosphere, 14 h). The catalyst proved to be reusable for at least four cycles, although decreasing yields down to 50% were observed.

Desulfurization from Gasoline by Polymer Resin at Room Temperature and Atmospheric Pressure

2011 ◽  
Vol 396-398 ◽  
pp. 1283-1286
Author(s):  
Jian Peng Zhu ◽  
Chun Hu Li ◽  
Jia Ling Chen ◽  
Ying Wei Luo
Keyword(s):  
Reaction Time ◽  
Sulfur Content ◽  
Atmospheric Pressure ◽  
Room Temperature ◽  
Oxidative Desulfurization ◽  
Sulfur Compounds ◽  
Molar Ratio ◽  
Reaction Conditions ◽  
Polymer Resin ◽  
Mild Conditions

Abstract. Investigation of polymer resin as catalyst in the oxidative desulfurization (ODS) process has revealed that the method can be applied to make a relative high removal of sulfur compounds. The reaction conditions, including temperature, amount of oxidant and reaction time were studied. The best result occurs under mild conditions with respect to room temperature and atmospheric pressure, to remove 75.54% of the totle sulfur content in the presence of H2O2 with an O/S molar ratio of 17. Possible mechanism is also disscussed.

Synthesis of Unsymmetrical 1,3-Diynes via Pd/Cu-Catalyzed Cross-Coupling of Terminal Alkynes at Room Temperature

2016 ◽  
Vol 34 (9) ◽  
pp. 895-900 ◽  
Author(s):  
Yashuai Liu ◽  
Ping Liu ◽  
Ningning Gu ◽  
Jianwei Xie ◽  
Yan Liu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Cross Coupling ◽  
Terminal Alkynes

ChemInform Abstract: Enaminone Ligand-Assisted Homo- and Cross-Coupling of Terminal Alkynes under Mild Conditions.

ChemInform ◽  
2013 ◽  
Vol 44 (44) ◽  
pp. no-no
Author(s):  
Yunyun Liu ◽  
Chunping Wang ◽  
Xiaobo Wang ◽  
Jie-Ping Wan
Keyword(s):  
Cross Coupling ◽  
Terminal Alkynes ◽  
Mild Conditions

Synthesis of metalloporphyrin-based conjugated microporous polymer spheres directed by bipyridine-type ligands

2015 ◽  
Vol 51 (34) ◽  
pp. 7352-7355 ◽  
Author(s):  
Guipeng Ji ◽  
Zhenzhen Yang ◽  
Yanfei Zhao ◽  
Hongye Zhang ◽  
Bo Yu ◽  
...  
Keyword(s):  
Cross Coupling ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer ◽  
Polymer Spheres

Metalloporphyrin-based conjugated microporous polymer spheres were obtained via Sonagashira–Hagihara cross coupling reactions directed by bipyridine-type ligands.

Visible-light-activated copper(i) catalyzed oxidative Csp–Csp cross-coupling reaction: efficient synthesis of unsymmetrical conjugated diynes without ligands and base

2016 ◽  
Vol 18 (16) ◽  
pp. 4526-4530 ◽  
Author(s):  
Arunachalam Sagadevan ◽  
Ping-Chiang Lyu ◽  
Kuo Chu Hwang
Keyword(s):  
Visible Light ◽  
Room Temperature ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Terminal Alkynes ◽  
Efficient Synthesis ◽  
Cross Coupling Reaction ◽  
Conjugated Diynes

An efficient and eco-friendly approach to Csp–Csp cross-coupling of terminal alkynes for the construction of unsymmetrical conjugated diynes via a visible-light-induced CuCl catalysed process at room temperature is described.

An N-heterocyclic carbene-functionalised covalent organic framework with atomically dispersed palladium for coupling reactions under mild conditions

2019 ◽  
Vol 21 (19) ◽  
pp. 5267-5273 ◽  
Author(s):  
Junjuan Yang ◽  
Yuanyuan Wu ◽  
Xiaowei Wu ◽  
Wenjing Liu ◽  
Yaofang Wang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Pure Ethanol ◽  
Covalent Organic Framework ◽  
Mild Conditions ◽  
Cross Coupling Reaction ◽  
Aqueous Solvent ◽  
Organic Framework

We report a heterogeneous catalyst based on N-heterocyclic carbene-functionalized covalent organic framework, which shows high activity in the C–C cross coupling reaction at room temperature in pure/ethanol aqueous solvent even with multiple reuse.

scholarly journals An Efficient Heterogeneous Palladium(0)-Catalysed Cross-Coupling between 1-Bromoalkynes and Terminal Alkynes Leading to Unsymmetrical 1,3-Diynes

2018 ◽  
Vol 42 (3) ◽  
pp. 133-137 ◽  
Author(s):  
Zhaotao Xu ◽  
Jinting Ai ◽  
Mingzhong Cai
Keyword(s):  
Room Temperature ◽  
Cross Coupling ◽  
Terminal Alkynes ◽  
Reaction Solution ◽  
Simple Filtration ◽  
Bidentate Phosphine ◽  
Mcm 41

An efficient heterogeneous palladium(0)-catalysed cross-coupling of 1-bromoalkynes with terminal alkynes was achieved in DMF at room temperature in the presence of 5 mol% of MCM-41-immobilised bidentate phosphine palladium(0) complex [MCM-41-2P-Pd(0)] and 2 mol% of CuI with Et3N as base, yielding a variety of unsymmetrical 1,3-diynes in moderate to good yields. This heterogeneous palladium(0) complex could be easily recovered by a simple filtration of the reaction solution and recycled at least seven times without significant decrease in activity.

Enaminone ligand-assisted homo- and cross-coupling of terminal alkynes under mild conditions

2013 ◽  
Vol 54 (30) ◽  
pp. 3953-3955 ◽  
Author(s):  
Yunyun Liu ◽  
Chunping Wang ◽  
Xiaobo Wang ◽  
Jie-Ping Wan
Keyword(s):  
Cross Coupling ◽  
Terminal Alkynes ◽  
Mild Conditions

Efficient fixation of CO2 at mild conditions by a Cr-conjugated microporous polymer

2014 ◽  
Vol 23 (1) ◽  
pp. 22-28 ◽  
Author(s):  
Yong Xie ◽  
Rui-Xia Yang ◽  
Nian-Yu Huang ◽  
Hua-Jun Luo ◽  
Wei-Qiao Deng
Keyword(s):  
Mild Conditions ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer
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