نتایج جستجو برای: dehydrohalogenation
تعداد نتایج: 49 فیلتر نتایج به سال:
This account presents the importance of ruthenium-catalysed alkene cross-metathesis for the catalytic transformations of biomass derivatives into useful intermediates, especially those developed by the authors in the Rennes (France) catalysis team in cooperation with chemical industry. The cross-metathesis of a variety of functional alkenes arising from plant oils, with acrylonitrile and fumaro...
Results of the bromination and dehydrobromination of several angular methylated decalindiones are described. The key reaction, base-induced cyclization of the monobromo keto ester (3), and the dibromo ketone (4), leads to the formation of tricyclic systems (6) and (9) respectively.
s and Presentations Bylaska E. J. , Dixon D. A. , Felmy A. R, and P. G. Tratnyek (2003) One-electron reduction of substituted chlorinated methanes: Application of ab initio electronic structure theory. 58th Northwest Regional Meeting of the American Chemical Society, 12-14 June 2003, Bozeman, MT. Tratnyek P. G., Nurmi, J. T., and V. Sarathy (2003) Contaminant degradation with iron nanoparticles...
Molecular orbital calculations are presented for the parent sulfine and some monoand dihalogensubstituted sulfines, using ab initio and INDO methods. A partial geometry optimization was performed for nine different sulfines. Charge distributions, potential surfaces and dipole moments were calculated from the wave functions of the optimized geometries. Cis-trans interconversion barriers and elec...
Molecular orbital calculations are presented for the parent sulfine and some monoand dihalogensubstituted sulfines, using ab initio and INDO methods. A partial geometry optimization was performed for nine different sulfines. Charge distributions, potential surfaces and dipole moments were calculated from the wave functions of the optimized geometries. Cis-trans interconversion barriers and elec...
Molecular orbital calculations are presented for the parent sulfine and some monoand dihalogensubstituted sulfines, using ab initio and INDO methods. A partial geometry optimization was performed for nine different sulfines. Charge distributions, potential surfaces and dipole moments were calculated from the wave functions of the optimized geometries. Cis-trans interconversion barriers and elec...
Molecular orbital calculations are presented for the parent sulfine and some monoand dihalogensubstituted sulfines, using ab initio and INDO methods. A partial geometry optimization was performed for nine different sulfines. Charge distributions, potential surfaces and dipole moments were calculated from the wave functions of the optimized geometries. Cis-trans interconversion barriers and elec...
•Fully sp2-C-conjugated TPE-based isomeric POPs are reported for CEES detoxification•Porous photosensitizers offer ROS generation even under visible light and ultrasound•Catalytic oxidation of is achieved ambient atmosphere without toxic products•The composition the generated types engineered by POP structures Selective sulfide to sulfoxide, controlling overoxidized products, a highly demanding...
The synthesis and thermal properties of new shape-persistent macrocycles of different sizes decorated with intraannular alkyl chains are described. The alkyl chain length is in all cases sufficient to cross the rings and to fill their interior completely. The investigation of the thermal behavior has shown that the smaller cycles do not exhibit thermotropic mesophases. Single crystal x-ray anal...
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