Results 151 to 160 of about 128,452 (331)

(Poly)Borylated Species as Modern Reactive Groups toward Unusual Synthetic Applications

Angewandte Chemie, EarlyView.
In this review, we spotlight recent breakthroughs in α‐polyboron‐substituted carbon‐centered intermediates (carbanion, carbocation, radical, and carbene) and polyborylated alkenes. By bridging fundamental reactivity with the application potential of these extraordinary species, we hope this review will serve as a roadmap for harnessing these unique ...
Nadim Eghbarieh, Nicole Hanania, Pinaki Nad, Tipu Alam, Tamir Kish, Ahmad Masarwa   +5 more
wiley   +2 more sources

Preparations of Heterocycles by Intramolecular Cyclization of Tellurols and Related Compounds to a Triple Bond.

, 2001
Haruki Sashida
openalex   +2 more sources

Rapid Ranking of Heterocycle-Side Chain Stacking Interactions Based on New Molecular Descriptors [PDF]

, 2021
Andrea N. Bootsma
openalex   +1 more source

An Unusual Hydrogen Migration/C−H Activation Reaction with Group 3 Metals [PDF]

, 2011
A novel hydrogen migration from the phenyl ring to the pyridine ring of an yttrium pyridyl complex supported by a 1,1′-ferrocene diamide ligand is reported.
Benitez, Diego, Diaconescu, Paula L., Goddard, William A., III, Miller, Kevin L., Tkatchouk, Ekaterina, Williams, Bryan N.   +5 more
core   +1 more source

Halide Bond Assisted Double Desymmetrization of Meso‐Dicarboxylic Acids with Symmetrical Olefins via Asymmetric Halogenation

Angewandte Chemie, EarlyView.
This work demonstrates a double desymmetrization of meso‐dicarboxylic acids with symmetrical olefins, constructing complex chiral lactones with six stereocenters in one step. Unexpectedly, the halide bond was found to be crucial in achieving high stereoselectivity.
Qingyu Zhang, Haihui Wang, Ying‐Lung Steve Tse, Ying‐Yeung Yeung   +3 more
wiley   +2 more sources

Regioselective Synthesis of Coumarin-Annulated Polycyclic Heterocycles via Sequential Claisen Rearrangement and Radical Cyclization Reaction

Chemistry Proceedings
Coumarin and its annulated heterocycles are mainly found in natural products, many of which show significant biological activities and are used extensively for the preparation of pharmaceutical products.
Pradip Debnath
doaj   +1 more source

Photoinduced Ring‐Opening Polymerization of N‐Carboxyanhydrides for the Preparation of Cross‐Linked Polypeptide Gels

Angewandte Chemie, EarlyView.
We employ a photochemical approach for ring‐opening polymerization (ROP) of α‐amino acid N‐carboxyanhydride (NCA) monomers to prepare covalently cross‐linked synthetic polypeptide gels using a photobase and light, which offers significant advantages in the synthesis of polypeptides and holds great potential for applications requiring spatial and ...
Ana Kočman, David Pahovnik, Ema Žagar, Petra Utroša   +3 more
wiley   +2 more sources

From A Fundamental Study on Hydrogen Bond Network and Chain Mobility in Benzimidazole Model Compounds to Various Designs and Development of Benzimidazole-based Anhydrous Membranes for Proton Exchange Membrane Fuel Cell

Journal of Analytical Science and Technology, 2011
A series of N-containing heterocycles i.e., imidazole and benzimidazole are systematically designed to study how proton transfer in anhydrous system is related to hydrogen bond network and molecular mobility.
Suwabun Chirachanchai, Chatchai Jarumaneeroj, Autchara Pangon   +2 more
doaj  

Alkoxy- and hydroxycyclization of enynes catalyzed by Pd(II) and Pt(II) catalysts [PDF]

, 2006
The development of a novel reaction ideal in terms of atom economy was achieved. The scope of the reaction was evaluated in the presence of Pd and Pt catalysts.
Charruault, Lise, Genêt, Jean-Pierre, Gladiali, Serafino Gabriele, Michelet, Véronique   +3 more
core  

Boosting the Nucleophilicity of the Diphenylphosphide Anion with Crown Ether Supported Heavy Alkali Metals to Facilitate Highly Efficient Catalytic Alkene Isomerisation

Angewandte Chemie, EarlyView.
Here, we report a breakthrough study in catalytic alkene isomerisation using crown ether‐supported alkali metal phosphides in which the activity increases sequentially and significantly as Group One is descended with Cs(18‐crown‐6)PPh2 (1Cs) performing best.
Felix Krämer, Thomas M. Horsley Downie, Robert E. Mulvey   +2 more
wiley   +2 more sources