Example of stereoisomerism with cis- and trans-2-butene. The difference between these isomers depends on whether the methyl groups are on the same side (cis) of the double bond, or on opposite sides (trans). The presence of a double bond therefore will result in a significantly greater ...
the boiling points of alkenes show a gradual increase with an increase in the molecular mass or chain length, this indicates that the intermolecular attractions become stronger with the increase in the size of the molecule. classification of alkenes alkyl groups bonded to the sp 2 hybridised ...
The topic chosen are Alkenes and Isomerism which is a part of hydrocarbon topic in chemistry secondary syllabus. The research was done at Maktab Rendah Sains MARA Terendak Melaka involving Form five Students who took Sijil Pelajaran Malaysia (SPM) in year 2010.The questionnaires is the ...
The 1 H- and 13 C-NMR spectra are discussed in detail in relation to the structure and isomerism of these alkene compounds. On the evidence of the spectra measured at different temperatures, the barrier to alkene rotation is ca. 46 and 48 kJ mol 1 in 1 and 2 , respectively. The NMR...
A samarium diiodide (SmI(2))-mediated reduction of gamma,gamma-difluoro-alpha,beta-enoates (15, 29, and 34) was successfully applied to the synthesis of (Z)-fluoroalkene dipeptide isosteres (23, 30, and 35), which have served as potential dipeptide mimetics. Reduction of the gamma,gamma...
2,2-Dimethyl- and 2-benzyl-2-methyl-1-(2,4,6-tri- tert-butylphenyl)-1-phosphaethenes were employed as ligand of mononuclear chlorogold(I) complexes, which ... S Ito,S Kusano,N Morita,... - 《Cheminform》 被引量: 19发表: 2010年 Aromatic 1H-1,2Diphosphole with a Planar Tricoo...