Convenient synthesis of versatile syndiotactic polystyrene materials containing pendant alkenyl groups with a scandium catalyst system

2018 ◽  
Vol 9 (27) ◽  
pp. 3709-3713 ◽  
Author(s):  
Ke Yang ◽  
Hui Niu ◽  
Zhenghai Shi ◽  
Rui Tan ◽  
Tingting Li ◽  
...  
Keyword(s):  
Catalyst System ◽  
Syndiotactic Polystyrene ◽  
New Family ◽  
System P ◽  
Convenient Synthesis

The syndioselective copolymerization of styrene with five alkenyl functionalized styrenic monomers, with the use of a scandium catalyst, produced a new family of versatile syndiotactic polystyrene materials with pendant alkenyl groups.

Effect of pressure on synthetic diamond crystals at high temperatures and pressures in Fe/Ni catalyst system

CrystEngComm ◽  
2021 ◽  
Author(s):  
Shuai Fang ◽  
Yongkui Wang ◽  
Liangchao Chen ◽  
Zhiyun Lu ◽  
Zhenghao Cai ◽  
...  
Keyword(s):  
Nitrogen Content ◽  
Growth Mechanism ◽  
Synthetic Diamond ◽  
Natural Diamond ◽  
Catalyst System ◽  
Necessary Condition ◽  
Ni Catalyst ◽  
Effect Of Pressure ◽  
Diamond Crystals ◽  
System P

Pressure is a necessary condition for the growth of natural diamond. Studying the effect of pressure on the nitrogen content of diamond is important for exploring the growth mechanism of...

Construction of polyphosphoesters with the main chain of rigid backbones and stereostructures via organocatalyzed ring-opening polymerization

2020 ◽  
Vol 11 (20) ◽  
pp. 3475-3480
Author(s):  
Yu-Jia Zheng ◽  
Guan-Wen Yang ◽  
Bo Li ◽  
Guang-Peng Wu
Keyword(s):  
Ring Opening ◽  
Main Chain ◽  
Catalyst System ◽  
Ring Opening Polymerization ◽  
System P ◽  
Organic Catalyst

A highly stereoregular polyphosphoester with a rigid cyclohexylene structure in the main chain was constructed via ring-opening polymerization (ROP) in the presence of an organic catalyst system.

Highly trans-1,4-stereoselective coordination chain transfer polymerization of 1,3-butadiene and copolymerization with cyclic esters by a neodymium-based catalyst system

2015 ◽  
Vol 6 (33) ◽  
pp. 6088-6095 ◽  
Author(s):  
Wenjie Zheng ◽  
Nan Yan ◽  
Yutian Zhu ◽  
Wenpeng Zhao ◽  
Chunyu Zhang ◽  
...  
Keyword(s):  
Chain Transfer ◽  
Catalyst System ◽  
Amphiphilic Copolymers ◽  
Cyclic Esters ◽  
System P ◽  
Chain Transfer Polymerization

Highly trans-1,4-stereoregular polybutadiene (TPB) was obtained by CCTP and novel amphiphilic copolymers (TPB-b-PCL/PLA) were successfully synthesized.

scholarly journals Robust Buchwald–Hartwig amination enabled by ball-milling

2019 ◽  
Vol 17 (7) ◽  
pp. 1722-1726 ◽  
Author(s):  
Qun Cao ◽  
William I. Nicholson ◽  
Andrew C. Jones ◽  
Duncan L. Browne
Keyword(s):  
Ball Milling ◽  
Catalyst System ◽  
Secondary Amines ◽  
Mechanochemical Method ◽  
System P

An operationally simple mechanochemical method for the Pd catalysed Buchwald–Hartwig amination of arylhalides with secondary amines has been developed using a Pd PEPPSI catalyst system.

scholarly journals Site-selective redox isomerizations of furanosides using a combined arylboronic acid/photoredox catalyst system

2020 ◽  
Vol 11 (6) ◽  
pp. 1531-1537 ◽  
Author(s):  
Victoria Dimakos ◽  
Daniel Gorelik ◽  
Hsin Y. Su ◽  
Graham E. Garrett ◽  
Gregory Hughes ◽  
...  
Keyword(s):  
Hydrogen Atom ◽  
Ribonucleotide Reductase ◽  
Boronic Acid ◽  
Catalyst System ◽  
Hydrogen Atom Transfer ◽  
Synthetic Analog ◽  
Arylboronic Acid ◽  
System P ◽  
Combined Action ◽  
Site Selective

The combined action of boronic acid, photoredox catalyst and hydrogen atom transfer mediator enables the transformation of furanosides to 2-keto-3-deoxyfuranosides, a synthetic analog of the process catalyzed by the ribonucleotide reductase enzymes.

Co-localization of catalysts within a protein cage leads to efficient photochemical NADH and/or hydrogen production

2016 ◽  
Vol 4 (32) ◽  
pp. 5375-5384 ◽  
Author(s):  
Ethan Edwards ◽  
Rajarshi Roychoudhury ◽  
Benjamin Schwarz ◽  
Paul Jordan ◽  
John Lisher ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Catalyst System ◽  
Protein Cage ◽  
System P

P22 VLP used as a constrained reaction environment for photochemical NADH and hydrogen production, by co-localizing a two-catalyst system.

Sustainable construction: admicellar catalysed synthesis of pyrimido[4,5-b]quinolines in an aqueous system

RSC Advances ◽  
2015 ◽  
Vol 5 (35) ◽  
pp. 27603-27609 ◽  
Author(s):  
I. R. Siddiqui ◽  
Pragati Rai ◽  
Rahila Rahila ◽  
Hoezyfa Sagir ◽  
Prashant Singh
Keyword(s):  
Aqueous System ◽  
Sustainable Construction ◽  
Nano Zno ◽  
Efficient Strategy ◽  
Highly Efficient ◽  
System P ◽  
Convenient Synthesis

A simple and highly efficient strategy has been documented for the rapid and convenient synthesis of pyrimido[4,5-b]quinoline from aldehydes, 2-hydroxynaphthalene1,4dione and 6-aminouracil in the presence of nano ZnO under aqueous admicellar system at 80 °C.

Ambient chemical fixation of CO2 using a highly efficient heterometallic helicate catalyst system

2018 ◽  
Vol 54 (18) ◽  
pp. 2212-2215 ◽  
Author(s):  
Li Wang ◽  
Cong Xu ◽  
Qingxin Han ◽  
Xiaoliang Tang ◽  
Panpan Zhou ◽  
...  
Keyword(s):  
Catalyst System ◽  
Chemical Fixation ◽  
Highly Efficient ◽  
System P

Two novel heptanuclear 3d–4f helicates have been synthesized and characterized.

scholarly journals Highly efficient conversion of CO2 to cyclic carbonates with a binary catalyst system in a microreactor: intensification of “electrophile–nucleophile” synergistic effect

RSC Advances ◽  
2018 ◽  
Vol 8 (68) ◽  
pp. 39182-39186 ◽  
Author(s):  
Ming-Ran Li ◽  
Ming-Chao Zhang ◽  
Tian-Jun Yue ◽  
Xiao-Bing Lu ◽  
Wei-Min Ren
Keyword(s):  
Synergistic Effect ◽  
Ammonium Salt ◽  
Coupling Reaction ◽  
Catalyst System ◽  
Cyclic Carbonates ◽  
Efficient Conversion ◽  
Highly Efficient ◽  
System P ◽  
Binary Catalyst

An intensification of the “electrophile–nucleophile” synergistic effect was achieved in a microreactor for the coupling reaction of CO2 and epoxides mediated by the binary Al complex/ternary ammonium salt catalyst system.

scholarly journals Temperature controlled condensation of nitriles: efficient and convenient synthesis of β-enaminonitriles, 4-aminopyrimidines and 4-amidinopyrimidines in one system

RSC Advances ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 6576-6583
Author(s):  
Yinghua Li ◽  
Yingzu Zhu ◽  
Shiqun Xiang ◽  
Weibin Fan ◽  
Jiang Jin ◽  
...  
Keyword(s):  
Reaction Temperature ◽  
System P ◽  
Convenient Synthesis ◽  
Temperature Controlled

A wide variety of β-enaminonitriles, 4-aminopyrimidines and 4-amidinopyrimidines were simply synthesized from organonitriles by controlling the reaction temperature.

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