ChemInform Abstract: Sulfonates of N-Triazinylammonium Salts as Highly Efficient, Inexpensive and Environmentally Friendly Coupling Reagents for Peptide Synthesis

ChemInform ◽  
2008 ◽  
Vol 39 (28) ◽  
Author(s):  
Beata Kolesinska ◽  
Justyna Fraczyk ◽  
Giuseppina Sabatino ◽  
Anna M. Papini ◽  
Zbigniew J. Kaminski
Keyword(s):  
Peptide Synthesis ◽  
Environmentally Friendly ◽  
Coupling Reagents ◽  
Highly Efficient

Catalytic asymmetric hydrogenation reaction by in situ formed ultra-fine metal nanoparticles in live thermophilic hydrogen-producing bacteria

Nanoscale ◽  
2021 ◽  
Author(s):  
Wei Bing ◽  
Faming Wang ◽  
Yuhuan Sun ◽  
Jinsong Ren ◽  
Xiaogang Qu
Keyword(s):  
Metal Nanoparticles ◽  
Catalytic Hydrogenation ◽  
Asymmetric Hydrogenation ◽  
Environmentally Friendly ◽  
Hydrogenation Reaction ◽  
Highly Efficient ◽  
Hydrogenation Reactions ◽  
Live Bacteria ◽  
Catalytic Asymmetric Hydrogenation

An environmentally friendly biomimetic strategy has been presented and validated for the catalytic hydrogenation reaction in live bacteria. In situ formed ultra-fine metal nanoparticles can realize highly efficient asymmetric hydrogenation reactions.

scholarly journals Highly efficient reusable superhydrophobic sponge prepared by a facile, simple and cost effective biomimetic bonding method for oil absorption

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jiaqi Wang ◽  
Yan Chen ◽  
Qinyao Xu ◽  
Miaomiao Cai ◽  
Qian Shi ◽  
...  
Keyword(s):  
Environmentally Friendly ◽  
Absorption Capacity ◽  
Oil Absorption ◽  
Water Contact ◽  
Water Separation ◽  
Highly Efficient ◽  
Study Results ◽  
Different Types ◽  
Modification Method ◽  
Bonding Method

AbstractSuperhydrophobic sponges have considerable potential for oil/water separation. Most of the methods used for superhydrophobic modification of sponges require toxic or harmful solvents, which have the drawbacks of hazardous to environment, expensive, and complex to utilize. Moreover, the hydrophobic layer on the surface of sponge is often easily destroyed. In this paper, a highly efficient superhydrophobic sponge with excellent reusability was developed by using a facile, simple and environmentally friendly dopamine biomimetic bonding method. Different types of sponges, such as melamine, polyethylene or polyurethane sponge wastes, were used as raw materials to prepare superhydrophobic sponges, which possess the advantages of inexpensive and abundant. The effects of different dopamine polymerization time and different hydrophobic agent dosage on the hydrophobicity and oil absorption capacity of melamine sponges were optimized. The study results showed that the water contact angle of the superhydrophobic sponge could reach 153° with excellent organic solvent absorption capacity of 165.9 g/g. Furthermore, the superhydrophobic sponge retained approximately 92.1% of its initial absorption capacity after 35 reutilization cycles. More importantly, the dopamine biomimetic bonding superhydrophobic modification method can be used for different types of sponges. Therefore, a universally applicable, facile, simple and environmentally friendly superhydrophobic modification method for sponges was developed.

scholarly journals Mo@GAA-Fe3O4 MNPs: a highly efficient and environmentally friendly heterogeneous magnetic nanocatalyst for the synthesis of polyhydroquinoline derivatives

RSC Advances ◽  
2021 ◽  
Vol 11 (18) ◽  
pp. 10497-10511
Author(s):  
Mehraneh Aghaei-Hashjin ◽  
Asieh Yahyazadeh ◽  
Esmayeel Abbaspour-Gilandeh
Keyword(s):  
Ethyl Acetoacetate ◽  
Ammonium Acetate ◽  
Environmentally Friendly ◽  
Magnetic Nanocatalyst ◽  
Methyl Acetoacetate ◽  
Highly Efficient ◽  
Fe3o4 Mnps

Polyhydroquinolines were obtained from a sequential four-component reaction between dimedone or 1,3-cyclohexandione, ethyl acetoacetate, or methyl acetoacetate as a β-ketoester, aldehydes, and ammonium acetate, with Mo@GAA-Fe3O4 MNPs as a green nanocatalyst.

An improved soluble polynorbornene support for peptide synthesis

RSC Advances ◽  
2015 ◽  
Vol 5 (113) ◽  
pp. 93027-93031
Author(s):  
Nimmashetti Naganna ◽  
Nandita Madhavan
Keyword(s):  
Peptide Synthesis ◽  
Side Chains ◽  
Coupling Reagents

A soluble polynorbornene support containing an oligoether linker as well as alkyl and oligoether side chains has been developed and used to synthesize Leu5-Enkephalin in 52% overall yield using only 1.2 equivalents of coupling reagents.

Preparation of aromatic amines by copper-catalyzed coupling of boronic acids with aqueous ammonia

2010 ◽  
Vol 88 (9) ◽  
pp. 964-968 ◽  
Author(s):  
Zhaoqiong Jiang ◽  
Zhiqing Wu ◽  
Lixia Wang ◽  
Di Wu ◽  
Xiangge Zhou
Keyword(s):  
Aromatic Amines ◽  
Aqueous Ammonia ◽  
Environmentally Friendly ◽  
Boronic Acids ◽  
Reaction Conditions ◽  
Highly Efficient ◽  
Primary Aromatic Amines

A simple, highly efficient, and environmentally friendly protocol for the synthesis of primary aromatic amines by catalytic coupling of aromatic boronic acids with aqueous ammonia has been developed by using commercial and inexpensive CuSO4·5H2O as catalyst without addition of other solvents under mild reaction conditions.

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