these compounds. Several synthetic approaches are investigated, such as déhydrohalogénation reactions, and an analogue of the Wolff transposition of diazoketones. These allènes undergo readily cycloadditions with imines and diazoalkanes, leading to equivalents of β-lactams and cyclobutanones.
当它们在同一碳上具有两个吸电子基团时,
丙二烯与
乙烯酮密切相关,可以用作这些化合物的合成等效物。研究了几种合成方法,例如脱氢卤代反应和重
氮酮的Wolff转座类似物。这些
丙二烯容易与
亚胺和重氮
烷烃进行环加成反应,生成等效的β-内酰胺和
环丁酮。