Results 71 to 80 of about 22,717 (244)
5-Acetyl-2-amino-4-(2-fluorophenyl)-6-methyl-4H-pyran-3-carbonitrile dichlomethane hemisolvate
IUCrDataThe title compound, 2C15H13FN2O2·CH2Cl2, crystallizes with two main molecules in the asymmetric unit with a disordered dichloromethane solvent molecule.
Carren Nyapola +3 more
doaj +1 more source
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
, 2016 Stereospecific Synthesis of 2,3-Dihydro-4H-pyran-4-ones by Hg(II)- Catalyzed Rearrangement of 1-Alkynyl-2,3-epoxy ...
Steven Harper (2094226) +3 more
core +1 more source
, 2023 We discovered a simple synthetic approach to the construction of novel 2-amino-5-mercapto-6-(mercaptomethyl)-4-aryl-4H-pyran-3-carbonitriles (3a-i) under metal-free conditions. The methodology depended on the treatment of 2-arylidenemalononitriles (2a-i)
Mohammed A. Assiri (5412098) +1 more
core +1 more source
Danishefsky’s Diene vs Rawal’s Diene in [4+2] Hetero-Diels-Alder Reactions with Aldehydes
Журнал органічної та фармацевтичної хіміїThe Diels-Alder reaction remains one of the most versatile and widely employed cycloaddition strategies in synthetic organic chemistry. The development of functionalized dienes, particularly Danishefsky’s diene (DD) and Rawal’s diene (RD), has ...
Oleksii I. Shamrai +1 more
doaj +1 more source
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
The Chemical Record, EarlyView.Two decades of synthetic strategies for sulfur‐, selenium‐decorated coumarins are critically surveyed through 44 literature reports, with particular emphasis on derivatives functionalized at the C‐3 and C‐4 positions. This review reports the direct construction of the coumarin framework through cyclization processes and late‐stage functionalization of ...
Bruna R. Schneider +6 more
wiley +1 more source
Acta Crystallographica Section E, 2013 In the title compound, C28H22O6, the chromeno ring system is almost planar, with a dihedral angle between the mean planes of the pyran and benzene rings of 1.87 (8)°.
R. Ponnusamy +4 more
doaj +1 more source
Plant, Cell &Environment, EarlyView.ABSTRACT Hydroxycinnamic acid amides (HCAAs) are phenylpropanoid‐derived metabolites traditionally associated with antimicrobial defence and cell wall reinforcement during plant–pathogen interactions. However, their contribution to plant responses to mechanical injury, particularly in wound healing and damage‐induced signalling, remains poorly ...
Carmen Grech‐Hernández +9 more
wiley +1 more source
SynOpen, 2018 A facile, efficient and atom-economic synthesis of highly substituted benzo[h]qninolines was established by reaction of 2-methyl-5-nitrobenzonitrile with suitably functionalized 2H-pyran-2-ones under basic conditions.
Rahul Panwar +4 more
doaj +1 more source