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。