The title amine rotamers were prepared from the corresponding carboxylic acids and were diazotized with isopentyl nitrite in the presence of acetic acid in benzene. The ap rotamer affords, as main products, olefins that are derived by deprotonation after rearrangement of the intervening carbocation and small amounts each of the corresponding acetate and a cyclized product, both of which are derived
标题胺旋转异构体由相应的
羧酸制备,并在
苯中的
乙酸存在下用
亚硝酸异戊酯重
氮化。该适体提供作为主要产物的
烯烃,其在中间
碳阳离子重排后通过去质子化衍生,以及少量相应
乙酸酯和环化产物中的每一种,两者均衍生自未重排的阳离子。相比之下,
烯烃是次要产物,环化产物在形式上是通过在重排之前将插入的阳离子插入
1-甲基的 C-H 键而衍生出来的,在 sc 异构体的情况下是主要的。该环状产物是独立合成的。在sc相对于ap的情况下,相应
乙酸盐的产率增加到相当大的程度。