complete regio- and stereoselectivity to give the corresponding diamines 2 and 3, respectively, in excellent yields, similar openings with water could only be achieved in the presence of a catalytic amount of cerium(IV) ammonium nitrate under very mild conditions furnishing the amino alcohols 4.
虽然甲基胺和
苄胺在
乙腈中非常有效地打开 N-
甲苯磺酰基
氮丙啶 1 并具有完全的区域和立体选择性,分别以极好的收率得到相应的二胺 2 和 3,但只有在催化作用下才能实现与
水类似的打开4. 在非常温和的条件下加入
硝酸铈 (IV)
铵的量,以提供
氨基醇 4.