نتایج جستجو برای: environmentally friendly

تعداد نتایج: 56218  

Journal: :Chemical communications 2009
Shigeki Mori Masato Takubo Kazuya Makida Takayoshi Yanase Satoka Aoyagi Tomohiro Maegawa Yasunari Monguchi Hironao Sajiki

A simple, efficient, and environmentally-friendly heterogeneous Ru/C-catalyzed oxidation of secondary and primary alcohols without additives under an atmosphere of oxygen has been established.

Journal: :Molecules 2017
Hui Zhao Zhuwen Wei Zhiyan Jiang Sumei Li Yixian Liao Yiming Guo Yongmei Tang Weihao Chen Guohua Zhong Gaopeng Song

Oligosaccharides have been used for an environmentally friendly insect control in the agricultural industry. In order to discover novel eco-friendly pesticides, a series of partially acetylated oligorhamnoses mezzettiasides, 2-8, and their analogues, 9-14, with biosurfactant characteristics were designed and synthesized, some of which exhibited comparable to or even stronger aphicidal activity ...

Journal: :journal of nanostructures 2012
j. safaei-ghomi m. a. ghasemzadeh

the efficient and environmentally friendly method for the one-pot synthesis of polyhydroquinolines has been developed in the presence of cuo nanoparticles. the multi-component reactions of aldehydes, dimedone, ethyl acetoacetate andammonium acetate were carried out under solvent-free conditions to afford some polyhydroquinoline derivatives. this method provides several advantages including high...

Journal: :Chemical communications 2002
Cyril Aymonier Ulf Schlotterbeck Lydie Antonietti Philipp Zacharias Ralf Thomann Joerg C Tiller Stefan Mecking

Hybrids of silver particles of 1 to 2 nm in size with highly branched amphiphilically modified polyethyleneimines adhere effectively to polar substrates providing environmentally friendly antimicrobial coatings.

Journal: :Chemical communications 2016
Xu Tian Fanzhi Yang Dace Rasina Michaela Bauer Svenja Warratz Francesco Ferlin Luigi Vaccaro Lutz Ackermann

C-H arylations were accomplished with a user-friendly heterogeneous palladium catalyst in the biomass-derived γ-valerolactone (GVL) as an environmentally-benign reaction medium. The user-friendly protocol was characterized by ample substrate scope and high functional group tolerance in the C-H arylation of 1,2,3-triazoles, and the palladium catalyst could be recycled and reused in the C-H activ...

Journal: :iranian journal of catalysis 2012
leila khazdooz amin zarei abdol r. hajipour nafisehsadat sheikhan

an efficient, mild and environmentally friendly method was developed for the strecker reaction to synthesize α-aminonitriles in the presence of methyl imidazolium hydrogen sulfate ([hmim][hso4]) as an efficient catalyst. these syntheses were performed via a one-pot three-component condensation of aldehydes (or ketones), amines, and trimethylsilyl cyanide under mild and solvent free conditions.

2017
Chenglin Zhang

There is an increasing concern about agriculture’s role in polluting the environment which makes farmers feel guilty about using fertilizers. Fertigation is proposed as a panacea to this dilemma, which by this practice reaffirms the principles of 4Rs which are the right source, at the right rate, right time and right place. The aim of this study was to explore constraints and opportunities for ...

A. Allahverdi V. Jafari

Colloidal nanosilica is currently being produced by various methods which are mainly high energy intensive and/or not environmentally friendly. It is therefore essential to develop new energy-efficient and environmentally friendly technologies. This paper introduces a new ultrasound assisted route based on alkali leaching of silica fume for synthesis of colloidal silica nanoparticles. The ef...

A water soluble, Bronsted acid, 5-sulfosalicylic acid as an efficient organocatalyst was used for the synthesis of physiologically active 2-substituted benzimidazole derivatives from o-phenylenediamine and aromatic aldehydes in ethanol at reflux condition. Cost-effectiveness, use of non-hazardous solvents, metal free and commercially available catalyst, single-step, environmentally fri...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید