An extraordinary inversion of the regioselectivity in the reaction of C-adamantylation of pyrazoles by 1-bromoadamantane was observed when the autoclave vessel was replaced by a microwave oven. In these last conditions mono and disubstituted 3(5)-(1-adamantyl) pyrazoles were obtained.
当用微波炉代替高压釜时,
1-溴金刚烷对
吡唑进行 C-
金刚烷化反应的区域选择性发生了奇特的逆转。在最后这些条件下,得到了单取代和二取代的 3(5)-(1-
金刚烷基)
吡唑。