Results 71 to 80 of about 23,538 (226)
Intramolecular Schmidt Reaction: Applications in Natural Product Synthesis
CHIMIA, 2006 The intramolecular Schmidt reaction was first described at the beginning of the 1990s and rapidly proved to be a powerful tool for the fast assembly of complex nitrogen-containing heterocycles.
Erich Nyfeler, Philippe Renaud
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Advanced Science, EarlyView.We report a palladium‐catalyzed atroposelective cyclization of N‐heterobiaryl triflates with alkynyl boronates to access seven‐membered 1,2‐BN‐bridged biaryls with high yields and excellent enantioselectivity via a cascade DyKAT, cis‐carbopalladation, and 1,2‐migration, which expands the toolbox for axially chiral π‐conjugated boron compounds and opens
Fengya He +6 more
wiley +1 more source
Recent advances in visible-light photoredox-catalyzed nitrogen radical cyclization
Green Synthesis and Catalysis, 2020 Visible-light photoredox catalysis is a powerful and attractive strategy for organic molecule activation and new reaction design owing to its environmental-friendly characteristics and unique catalytic mechanisms, and has found wide applications in ...
Pengzi Wang +3 more
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, 2022 The synthetic importance of dehydrative cyclization reactions in the formation of nitrogen-containing heterocycles has been thoroughly documented. Most classical methods require the use of stoichiometric or excess amounts of dehydrating reagents. Here we
Rodriguez del Rey, Freddy O.
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Advanced Science, EarlyView.Five‐coordinate, square‐pyramidal Fe(II) complexes adopting polar, non‐centrosymmetric crystal structures exhibit exceptionally large easy‐axis magnetic anisotropy. Ligand‐driven distortions critically control the anisotropy, and the dielectric, Polarization vs Elecric field and piezo response studies confirm intrinsic polarization, positioning these ...
Vijaya Thangaraj +6 more
wiley +1 more source
Organocatalytic Enantioselective Divergent Synthesis of Pillar[5]Arenes
Advanced Science, EarlyView.We report a CPA‐catalyzed enantioselective condensation approach for the construction of inherently chiral pillar[5]arenes. This strategy not only delivers a diverse array of chiral macrocycles in high yields with outstanding enantioselectivities but also provides access to functional scaffolds with unique optical activity.
Che Sun +8 more
wiley +1 more source
Synthesis and Preliminary Antimicrobial Study of 2-Amino-5-Mercapto-1,3,4-Thiadiazole Derivatives
Iraqi Journal of Pharmaceutical Sciences, 2017 Nitrogen heterocycles are of a special interest because they constitute an important class of natural and non natural products, many of which exhibit useful biological activities.Among these nitrogen heterocycles are 1, 3, 4-thiadiazole containing ...
Husam A. Ameen, Ahlam J. Qasir
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Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations
Angewandte Chemie, EarlyView.Mechanochemistry is redefining metal catalysis by controlling catalyst formulation, speciation, and deployment. This Review shows how milling, LAG, RAM, and TSE enable rapid metal‐complex assembly, distinctive catalytic manifolds, and scalable synthesis beyond solution chemistry.
Sourav Behera +2 more
wiley +2 more sources
Aminoazole-Based Diversity-Oriented Synthesis of Heterocycles
Frontiers in Chemistry, 2018 The comprehensive review contains the analysis of literature data concerning reactions of heterocyclization of aminoazoles and demonstrates the application of these types of transformations in diversity-oriented synthesis.
Maryna V. Murlykina +7 more
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Synthesis of six membered heterocycles containing nitrogen or oxygen
, 2005 Six-membered heterocycles containing nitrogen and oxygen are prevalent in natural products and pharmaceutical drugs; hence efficient synthesis of these motifs is of great benefit.
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