Results 11 to 20 of about 958,825 (298)

Constructing multiple active sites in iron oxide catalysts for improving carbonylation reactions

Nature Communications, 2023
Surface engineering is a promising strategy to improve the catalytic activities of heterogeneous catalysts. Nevertheless, few studies have been devoted to investigate the catalytic behavior differences of the multiple metal active sites triggered by the ...
Shujuan Liu, Teng Li, Feng Shi, Haiying Ma, Bin Wang, Xingchao Dai, Xinjiang Cui   +6 more
doaj   +1 more source

Dearomative 1,4-difunctionalization of naphthalenes via palladium-catalyzed tandem Heck/Suzuki coupling reaction

Nature Communications, 2020
Naphthalene is a challenging arene towards transition-metal-catalyzed dearomative difunctionalization. Here, the authors show that naphthalene may act as a masked conjugated diene in palladium-catalyzed dearomative 1,4-diarylation or 1,4-vinylarylation ...
Bo Zhou, Hongliang Wang, Zhong-Yan Cao, Jia-Wen Zhu, Ren-Xiao Liang, Xin Hong, Yi-Xia Jia   +6 more
doaj   +1 more source

Metal oxides and their roles in heterogeneous catalysis: special emphasis on synthesis protocols, intrinsic properties, and their influence in transfer hydrogenation reactions

SN Applied Sciences, 2023
This review emphasizes La-based metal oxides of the perovskite form and their application in heterogeneous catalytic transfer hydrogenation (CTH) reactions from year 2013. Perovskites are potential alternatives to noble metals. The possibility of induced-
Tafadzwa Precious Mabate, Nomathamsanqa Prudence Maqunga, Sinemihlali Ntshibongo, Mulisa Maumela, Ndzondelelo Bingwa   +4 more
doaj   +1 more source

Chemical Synthesis of Proteins [PDF]

Annual Review of Biophysics and Biomolecular Structure, 2005
▪ Abstract  Proteins have become accessible targets for chemical synthesis. The basic strategy is to use native chemical ligation, Staudinger ligation, or other orthogonal chemical reactions to couple synthetic peptides. The ligation reactions are compatible with a variety of solvents and proceed in solution or on a solid support.
Bradley L, Nilsson, Matthew B, Soellner, Ronald T, Raines   +2 more
openaire   +2 more sources

Synthesis of aromatic lactone analogues of Lipoxin A4

BMC Research Notes, 2022
Objective Synthesis of novel aromatic Lipoxin A4 lactone analogues. Results Novel para-substituted aromatic lactone analogues of Lipoxin A4 have been synthesized in a convergent manner with six steps in the longest linear sequence in 12–13% yields ...
Aya Ismael, Muhammad Zeeshan, Jørn H. Hansen   +2 more
doaj   +1 more source

SYNTHESIS OF NEW AZODYES FOR DYEING OF COTTON AND POLYMER MATERIALS

Journal of Chemists, Technologists and Environmentalists
New orange and magenta dyes, containing a residue of 4,4`-diaminostilbene-2,2`-disulphonic acid and allylic groups in their molecule have been synthesized.
Polya Miladinova, Natali Tsvetanova, Petranka Naydenova-Marinova   +2 more
doaj   +1 more source

Engineering porosity into trimetallic PtPdNi nanospheres for enhanced electrocatalytic oxygen reduction activity

Green Energy & Environment, 2018
Platinum (Pt)-based multi-metallic nanostructures show great promise as electrocatalysts for the oxygen reduction reaction (ORR) in fuel cell cathodes. Herein, we report a simple, one-step surfactant-directed synthetic strategy to directly synthesize tri-
Chunjie Li, You Xu, Yinghao Li, Hongjie Yu, Shuli Yin, Hairong Xue, Xiaonian Li, Hongjing Wang, Liang Wang   +8 more
doaj   +1 more source

Anion Influence on Spin State in Two Novel Fe(III) Compounds: [Fe(5F-sal2333)]X

Crystals, 2018
Structural and magnetic data on two iron (III) complexes with a hexadentate Schiff base chelating ligand and Cl− or BPh4− counterions are reported.
Sriram Sundaresan, Irina A. Kühne, Conor T. Kelly, Andrew Barker, Daniel Salley, Helge Müller-Bunz, Annie K. Powell, Grace G. Morgan   +7 more
doaj   +1 more source

Metal-free alcohol-directed regioselective heteroarylation of remote unactivated C(sp3)–H bonds

Nature Communications, 2018
Direct remote C–H functionalization of aliphatic alcohols via alkoxy radicals is largely unexplored. Here, the authors report the C(sp3)-heteroaryl bond formation in aliphatic alcohols mediated by alkoxy radicals formed with a hypervalent iodine reagent.
Xinxin Wu, Hong Zhang, Nana Tang, Zhen Wu, Dongping Wang, Meishan Ji, Yan Xu, Min Wang, Chen Zhu   +8 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source