[3+2] Cycloadditions: Part XXXIV: Further Investigations of Cycloadditions of
C,N-Diaryl- and C-Aryl-N-methyl Nitrones to α,β-Unsaturated Esters
作者:Sumana Sengupta、Avijit Banerji
DOI:10.14233/ajchem.2019.22232
日期:2019.11.30
as three atom components (TAC) to substitutedmethyl E-cinnamates and diethyl arylidene malonates have been further investigated. [3+2] Cycloadditions of cinnamates yielded mixtures of cycloadducts, the major products being the 3,4-trans-4,5-trans-2,3,5-triaryl-4-carbomethoxy products originating from the endo-carbonyl-exo-aryl meta channel approach of the cinnamate component. [3+2] Cycloadditions to
1,3-dipolar cycloadditions. Part XII - selective cycloaddition route to 4-nitroisoxazolidine ring systems
作者:Avijit Banerji、Maya Gupta、Pizush Kanti Biswas、Thierry Prangé、Alain Neuman
DOI:10.1002/jhet.5570440511
日期:2007.9
Cycloadditions of C,N-diarylnitrones to β-nitrostyrenes occurred to yield two diastereoisomeric cycloadducts, the 3,4-trans-4,5-trans substituted isoxazolidine derivatives being formed selectively as the major products. These were characterised by spectroscopic and X-ray data. Conformational studies were carried out by X-ray crystallography and Molecular Modelling.