X=Y-ZH systems as potential 1,3-dipoles. Part 31. Generation of nitrones from oximes. Background and scope of the tandem 1,2-prototropy-intramolecular cycloaddition sequence.
作者:Ronald Grigg、Frances Heaney、Jasothara Markandu、Sivagnanasundram Surendrakumar、Thornton-Pett Mark、Warnock J. William
DOI:10.1016/s0040-4020(01)86441-3
日期:1991.1
and electronic factors that favour or disfavour such a sequence are discussed. Deuterium labelling studies with an aliphatic oxime rule out the involvement of an enehydroxylamine in the prototropic generation of the NH nitrone.
芳基和脂族肟中的1,2-原生质产生少量平衡浓度的相应NH硝酮。描述了涉及芳基和脂族肟的串联1,2-原生质-分子内环加成序列的实例,并讨论了有利或不利于该序列的空间和电子因素。用脂肪族肟进行氘标记的研究排除了烯羟胺参与NH硝酮的质子生成过程。