The Synthesis of Chiral α-Aryl α-Hydroxy Carboxylic Acids via RuPHOX-Ru Catalyzed Asymmetric Hydrogenation
作者:Huan Guo、Jing Li、Delong Liu、Wanbin Zhang
DOI:10.1002/adsc.201700846
日期:2017.10.25
A ruthenocenyl phosphino‐oxazoline‐ruthenium complex (RuPHOX−Ru) catalyzedasymmetrichydrogenation of α‐aryl keto acids has been successfully developed, affording the corresponding chiral α‐aryl α‐hydroxy carboxylic acids in high yields and with up to 97% ee. The reaction could be performed on a gram scale with a relatively low catalyst loading (up to 5000 S/C) and the resulting products can be transformed
已成功开发了钌烯基膦基-恶唑啉-钌络合物(RuPHOX-Ru)催化的α-芳基酮酸不对称氢化反应,可提供高收率和ee高达97%的相应手性α-芳基α-羟基羧酸。该反应可以在相对较低的催化剂负载量(至多5000 S / C)下以克为单位进行,所得产物可以转化为几种手性结构单元,生物活性化合物和手性药物。
Highly Enantioselective Hydrogenation of α-Keto Esters Catalyzed by Ru-Tunephos Complexes
作者:Xumu Zhang、Chun-Jiang Wang、Xianfeng Sun
DOI:10.1055/s-2006-932461
日期:——
Various enantiomerically pure α-hydroxy esters were synthesized by asymmetric hydrogenation of α-keto esters catalyzed by Ru-C n -Tunephos complex. Up to 97.1% ee has been achieved for both α-aryl and α-alkyl substituted α-keto esters.
通过由Ru-C n -Tunephos 配合物催化的α-酮酯的不对称氢化合成了各种对映体纯α-羟基酯。α-芳基和 α-烷基取代的 α-酮酯的 ee 高达 97.1%。
Chenevert, Robert; Letourneau, Martin, Canadian Journal of Chemistry, 1990, vol. 68, p. 314 - 316
作者:Chenevert, Robert、Letourneau, Martin
DOI:——
日期:——
Miyazawa, Toshifumi; Kurita, Sota; Ueji, Shinichi, Journal of the Chemical Society. Perkin transactions I, 1992, # 18, p. 2253 - 2258