Ruthenium-Catalyzed Asymmetric Hydrogenation of β-Keto- enamines: An Efficient Approach to Chiral γ-Amino Alcohols
作者:Huiling Geng、Xiaowei Zhang、Mingxin Chang、Le Zhou、Wenjun Wu、Xumu Zhang
DOI:10.1002/adsc.201100305
日期:2011.11
highly efficient and enantioselective hydrogenation of unprotected β-ketoenamines catalyzed with ruthenium(II) dichloro(S)-(−)-2,2′-bis[di(3,5-xylyl)phosphino]-1,1′-binaphthyl}[(2S)-(+)-1,1-bis(4-methoxyphenyl)-3-methyl-1,2-butanediamine] Ru[(S)-xylbinap][(S)-daipen]Cl2} has been successfully developed. This methodology provides a straightforward access to free γ-secondary amino alcohols, which are
钌(II)二氯(S)-(-)-2,2'-双[di(3,5-二甲苯基)膦基] -1,1'-催化的未保护的β-酮烯胺的高效对映选择性氢化双萘基} [(2 S)-(+)-1,1-双(4-甲氧基苯基)-3-甲基-1,2-丁二胺] Ru [(S)-xylbinap] [(S)-daipen] Cl 2 }已成功开发。这种方法可以直接获取游离的γ-仲氨基醇,这是各种药物和天然产品的关键组成部分,在所有情况下均具有高产率(> 99%)和出色的对映选择性(ee高达99%)。