作者:Hannah C. Maytum、Javier Francos、David J. Whatrup、Jonathan M. J. Williams
DOI:10.1002/asia.200900527
日期:2010.3.1
H2 in hydrogen‐transfer reactions to ketones, imines, and alkenes. Unlike simple alcohols, which establish equilibrium in the reduction of ketones, 1,4‐butanediol acts essentially irreversibly owing to the formation of butyrolactone, which acts as a thermodynamic sink. It is therefore not necessary to use 1,4‐butanediol in great excess in order to achieve reduction reactions. In addition, allylic alcohols
1,4-丁二醇能够在氢转移反应中将两当量的H 2输送至酮,亚胺和烯烃。与简单的醇在酮的还原过程中建立平衡不同,1,4-丁二醇由于形成了丁内酯而起不可逆的作用,而丁内酯起着热力学的作用。因此,不必为了实现还原反应而过量使用1,4-丁二醇。此外,使用钌催化剂,以1,4-丁二醇为还原剂,通过异构化/还原顺序将烯丙醇还原为饱和醇。亚胺和烯烃在相似条件下也被还原。