A new and economical synthesis of α, α′-bis(substituted-benzylidene)cycloalkanones has been achieved by the reaction of cycloalkanones with different aromatic aldehydes using nano-TiO2/acetic acid as a catalyst in ethanol under reflux conditions with excellent yields. Five new products and three new single crystal structures are reported.
the activity studies, it is observed that the synthesis and antimicrobial as well as anticonvulsantactivities of novel 1, 3-thiazine derivatives have been shown better activity. Moreover molecular docking results give an insight into how further modification of the lead compound can be carried out for higher inhibitory activity. In particular, compounds with electron withdrawing substituents along
Nanomagnetic‐supported sulfonicacid is found to be a powerful and reusable heterogeneous catalyst for the rapidsynthesis of α,α′‐bis‐(substituted‐benzylidene)cycloalkanones under conventional heating and solvent free conditions. High yield, simple work up and easy recovery of the catalyst are the most obvious advantages of this procedure.
Stereoelectronic Effects: Perlin Effects in Thiane‐Derived Compounds
作者:Sebastian T. Jung、Luis Basche、Tony Reinsperger、Burkhard Luy、Joachim Podlech
DOI:10.1002/ejoc.202000198
日期:2020.5.22
Equatorial and axial hydrogens in methylene groups of six‐membered rings show differing coupling constants (Perlin effects) dependent on the adjacent functional groups. The coupling constants are influenced by stereoelectroniceffects and by the hybridizations of the carbons.