123499-46-7Relevant academic research and scientific papers
Elimination reactions of (E)-2,4-dinitrobenzaldehyde O-benzoyloximes promoted by R2NH/R2NH2+ in 70 mol % MeCN(aq). Change of reaction mechanism
Sang, Yong Pyun,Bong, Rae Cho
experimental part, p. 9451 - 9453 (2009/04/06)
(Chemical Equation Presented) Elimination reactions of (E)-2,4-(NO 2)2C6H3CH=NOC(O)-C6H 4X (1) promoted by R2NH/R2NH2 + in 70 mol % MeCN(aq) have been studied kinetically. The reactions are second-order and exhibit Broensted β = 0.27-0.32 and |βlg| = 0.28-0.32. The result can be described by a negligible Pxy interaction coefficient, pxy = ?β/ ?pKlg = ?βlg/?pKBH ≈ 0, which describes the interaction between the base catalyst and the leaving group. The negligible pxy coefficients are consistent with the (E1cb) irr mechanism.
