1,3,4-oxadiazine derivatives, in equilibrium with their corresponding trisubstituted enamine isomers, are obtained in a regiospecific way from cyclohexanone enamines and ethoxycarbonyl aroyl diimides. Such an equilibrium is not present in analogous oxadiazine systems, derived from aryl aroyl diimides.
                                    从
环己酮烯胺和乙氧羰基芳酰基二
酰亚胺以区域特异性方式获得与它们相应的三取代烯胺异构体平衡的1,3,4-恶二嗪衍
生物。这样的平衡在衍生自芳基芳酰基二
酰亚胺的类似的恶二嗪体系中不存在。