Ruthenium-Catalyzed Conjugate Hydrogenation of α,β-Enones by in situ Generated Dihydrogen from Paraformaldehyde and Water
作者:Wanfang Li、Xiao-Feng Wu
DOI:10.1002/ejoc.201403359
日期:2015.1
Notwithstanding that the highly selective hydrogenation of α,β-enones to allylic alcohols can be realized by using Noyori's Ru bifunctional system, the selective reduction of the C=C bonds in α,β-enones without touching the C=O bonds still lacks a general, simple, and efficient procedure. Ruthenium-catalyzed conjugate hydrogenation of various α,β-enones to saturated ketones with high selectivity was investigated
尽管使用 Noyori 的 Ru 双功能系统可以实现 α,β-烯酮向烯丙醇的高度选择性氢化,但在不接触 C=O 键的情况下选择性还原 α,β-烯酮中的 C=C 键仍然缺乏通用、简单、高效的程序。研究了钌催化的各种α,β-烯酮以高选择性共轭氢化成饱和酮。该程序最重要的特点是由多聚甲醛(或福尔马林)和水原位产生的氢气用作还原剂。