benzyl ester and nitro functionalities distinguishing from the benzyl protective group for the phenolic hydroxyl group has been developed by the employment of 2,2′-dipyridyl as an additive. The suppressive effect on the benzyl ether hydrogenolysis was strongly influenced by the sorts of nitrogen-containing bases employed as an additive.
通过使用
2,2'-联吡啶基作为二
甲基吡啶,开发了一种温和的
化学选择性氢化方法,该方法使用5%Pd / C的烯烃,N -Cbz,苄基酯和硝基官能团区别于
苯酚羟基的苄基保护基。添加剂。对苄基醚氢解的抑制作用受用作添加剂的各种含氮碱的强烈影响。