The use of a new carboranylamidophosphite ligand in the asymmetric Rh-catalyzed hydrogenation of α- and β-dehydroamino acid derivatives
作者:Sergey E. Lyubimov、Eugenie A. Rastorguev、Tatiana A. Verbitskaya、Pavel V. Petrovskii、Evamarie Hey-Hawkins、Valery N. Kalinin、Vadim A. Davankov
DOI:10.1016/j.poly.2011.02.003
日期:2011.4
hite ligand was synthesized and tested in the Rh-catalyzed asymmetric hydrogenation of α- and β-dehydroamino acid derivatives (up to 93% ee). The catalytic performance is affected greatly by temperature and the nature of solvents. Importantly, we have shown that in the hydrogenation of the β-dehydroamino acid derivatives the use of acidic 1,1,1,3,3,3-hexafluoro-2-propanol led to a significant increase
摘要合成了新的手性碳硼烷酰胺基亚磷酸酯配体,并在Rh催化的α-和β-脱氢氨基酸衍生物(ee高达93%)的不对称加氢中进行了测试。催化性能受温度和溶剂性质的很大影响。重要的是,我们已经表明,与异丙醇相比,在β-脱氢氨基酸衍生物的氢化中,使用酸性1,1,1,3,3,3,3-六氟-2-丙醇可导致对映选择性显着提高。 。