Results 101 to 110 of about 19,339 (247)
, 1982 N-Substituted pyrazoles (L) form complexes [MeHgL]NO, for which 2J(1H-199Hg) decreases with increasing basicity of L in a very similar manner to that observed for closely related N-substituted imidazole complexes.
Canty, AJ (15913241), Lee, CV (15913898)
core
The continuing significance of chiral agrochemicals
Pest Management Science, Volume 81, Issue 4, Page 1697-1716, April 2025.In the time frame 2018–2023, around 43% of the 35 chiral agrochemicals introduced to the market (herbicides, fungicides, insecticides, acaricides, and nematicides) contain one or more stereogenic centers in the molecule, and almost 69% of them have been marketed as racemic mixtures of enantiomers or stereoisomers.
Peter Jeschke
wiley +1 more source
Тонкие химические технологии, 2009 Synthesis of 1-(β-naphthyl)-3-ferrocenyl pyrazole-4-carbaldehyde was carried out from acetylferrocene and naphthalen-2-ylhydrazine followed by intramolecular cyclization under Vilsmeier-Haack conditions.
E. Yu. Osipova +4 more
doaj
Regioselective Preparation of Saturated Spirocyclic and Ring-Expanded Fused Pyrazoles
, 2016 Saturated bicyclic pyrazoles represent an important class of biologically active molecules, but their preparation can be hampered by labor-intensive synthesis of required starting materials.
David C. Blakemore (1748281) +3 more
core +1 more source
A Versatile Heterometallic Microporous MOF for Photocatalytic Hydrogen Generation
Small, EarlyView.This work describes a green and scalable approach to robust and flexible heterometallic MOFs, MIP‐215's, with tunable photoactivity for efficient, noble‐metal‐free solar hydrogen production. ABSTRACT Photocatalytic particulate systems offer a cost‐effective solar hydrogen production but are generally limited by narrow visiblelight absorption and poor ...
Xingze Wang +10 more
wiley +1 more source
Borylcyclopropanes: Synthetic Strategies and Applications
Angewandte Chemie, Volume 138, Issue 37, 7 September 2026.Borylcyclopropanes (cyclopropanes bearing a boron substituent) sit at the intersection of two privileged frameworks in synthesis. This review provides the first exhaustive survey of their chemistry, spanning metal–carbene, nucleophilic cyclization, radical, hydroboration, and C─H activation routes, and documenting applications in medicinal chemistry ...
Aiza A. Butt, Joseph M. Ready
wiley +2 more sources
, 1992 The mass spectrometric behaviour of two trifluoromethyl-substituted 4,5-dihydro-3H-pyrazoles and of their corresponding regioisomers 4,5-dihydro-1H-pyrazoles has been studied and compared with that of two non-fluorinated analogues.
L. BRUCHE +4 more
core
Advances in Unconventional and Sustainable Synthetic Approaches to Benzopyran Scaffolds
The Chemical Record, EarlyView.This review provides a comprehensive and critical analysis of low‐impact synthetic methodologies reported in the last 8 years (2018–2026) for the construction of benzopyran‐derived scaffolds, such as coumarins, flavones, chromones, chromenes, and chromanes. The benzopyran scaffold is a versatile family of heterocycles found in a wide range of bioactive
Nathalia B. Sá +4 more
wiley +1 more source
Complex Chemistry of a Chiral Terpyridine Ligand Based on (1R)‐(+)‐Camphor
Zeitschrift für anorganische und allgemeine Chemie, EarlyView.From (1R)‐(+)‐camphor, a chiral terpyridine ligand is accessible in a few steps that coordinates to divalent metal ions of the first and second transition metal row. From structural characterization, the steric repulsion of the two equatorial methyl groups of the tetrahydromethanoquinoline units becomes evident, which causes cyclometalation of the ...
Julia Ehrhard +2 more
wiley +1 more source
Rapidly Diversifying Hydrogen‐Bonded Organic Frameworks With Permanent Porosity
Angewandte Chemie, Volume 138, Issue 36, 1 September 2026.This article reviews diversifying hydrogen‐bonded organic frameworks (HOFs) with permanent porosity reported over the past 15 years, based on the molecular structures of their constituent tectons. Furthermore, several distinctive aspects and concepts are described, such as permanent porosity, isostructural (isoreticular) HOFs, and multicomponent mixed ...
Taito Hashimoto, Ichiro Hisaki
wiley +2 more sources