2,2-Dimethyl-3-dimethylamino-2H-azirine (1) reacts with the formyl-cycloalkanones 4–8 in boiling benzene to give the 1:1 adducts 13–17 in 60–99% yield (Table). These adducts are N′-[(2-oxo-cycloalkylidene)-methyl] derivatives of 2-amino-N, N-dimethylisobutyramide. The reaction mechanism (Scheme 6) is analogous to the mechanism of the reaction of 1 with carboxylic acids and cyclic enolisable 1,3-diketones
2,2-二甲基-3-二甲基
氨基-2- ħ -azirine(1)反应与甲酰基-环烷酮4 - 8在沸腾的苯,得到1:1的加合物13 - 17中60-99%的产率(表1)。这些加合物是2-
氨基-N,N-二甲基异丁酰胺的N'-[(2-氧代-环亚烷基)-甲基]衍
生物。反应机理(方案6)类似于1与
羧酸和环状可烯化的1,3-二酮的反应机理[1]。