Since the first proline-catalyzed asymmetric synthesis was reported in 1971, a number of asymmetric syntheses using proline and derivatives have been developed. Proline-type organocatalysts are predominantly applicable to a wide assortment of asymmetric aldol reactions and asymmetric ...
1,2,4-Triazole (abbreviated Htrz when used as a ligand in coordination compounds) is one of the two isomers of triazole (C2H3N3), a five-membered ring consisting of two carbon atoms and three nitrogen atoms.1,2,4-Triazole and its derivatives have a wide range of applications.
In recent years, asymmetric organic catalytic processes have increasingly become more mature and have been utilized in practical application scenarios.In comparison to metal catalytic processes, organic amine catalysts present numerous potential advantages, such as a more stable physicochemical ...
Water is an indispensable substance in human life and production. With the development of industry, the problem of water pollution is becoming more and more serious. For example, heavy metals in industrial production (such as Pb2+, As3+, Cu2+, Cr6+, Cd2+, Co3+, Mn2+, Hg2+, etc.) enter the ...
Imidazole is a five-membered aromatic heterocyclic compound with two nitrogen atoms. The hydrogen atom moves between the two nitrogen atoms, so there are two reciprocal isomers. Imidazole is not only present as histidine in living organisms, but is also a constituent of ribonucleic acid (RNA) ...
Photoacoustic imaging technology is a new imaging technology developed in recent years. It is a hybrid mode of bio/medical imaging methods based on the photoacoustic effect. In photoacoustic imaging, pulsed laser light is usually required to illuminate the imaging site. The absorbed light energy ...
Asymmetric organocatalysis has emerged as a powerful synthetic tool that is complementary to metal-catalyzed reactions. Pioneering work in this area dates back to the 1970s in which Eder et al. and Hajos et al. separately reported an intramolecular asymmetric aldol reaction which employed ...
C(sp2)- and C(sp)-hybridized coupling reactions are established catalytic approaches. However, multi-step C(sp3)- and C(sp2)-coupling reactions of boronic acids and related derivatives are still limited by ineffective two-electron transmetalation reactions. These conventional protocols exhibit ...
Electron microscopy is essential when studying the complex structure of cells and organelles and studying cellular biological processes. Colloidal gold and its various derivatives have been the most widely used antigen markers in biological electron microscopy. These particles can be attached to ...
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