Expanded Scope of the Asymmetric Hydrogenation of Minimally Functionalized Olefins Catalyzed by Iridium Complexes with Phosphite-Thiazoline Ligands
作者:Javier Mazuela、Oscar Pàmies、Montserrat Diéguez
DOI:10.1002/cctc.201300189
日期:2013.8
We have replaced the oxazoline group with a thiazoline moiety in one of the most successful of the phosphite–oxazoline ligand families for the Ir‐catalyzedhydrogenation of minimallyfunctionalizedolefins. A small but structurally important library of Ir phosphite–thiazoline precatalysts (Ir‐L1–L2 a–e) has been developed by changing the substituents/configurations at the biaryl phosphite group. We
我们已经用噻唑啉部分取代了恶唑啉基团,这是亚磷酸酯-恶唑啉配体家族中最成功的一种,用于最小功能化烯烃的Ir催化加氢。通过改变亚磷酸联芳酯基团的取代基/构型,开发了一个小的但在结构上很重要的亚磷酸Ir-噻唑啉预催化剂库(Ir- L1 - L2 a - e)。我们发现在配体设计中用噻唑啉部分取代恶唑啉在底物范围方面是有益的。
P-Stereogenic Ir-MaxPHOX: A Step toward Privileged Catalysts for Asymmetric Hydrogenation of Nonchelating Olefins
作者:Maria Biosca、Pol de la Cruz-Sánchez、Jorge Faiges、Jèssica Margalef、Ernest Salomó、Antoni Riera、Xavier Verdaguer、Joan Ferré、Feliu Maseras、Maria Besora、Oscar Pàmies、Montserrat Diéguez
DOI:10.1021/acscatal.2c05579
日期:2023.3.3
The Ir-MaxPHOX-type catalysts demonstrated high catalytic performance in the hydrogenation of a wide range of nonchelating olefins with different geometries, substitution patterns, and degrees of functionalization. These air-stable and readily available catalysts have been successfully applied in the asymmetrichydrogenation of di-, tri-, and tetrasubstitutedolefins (ee′s up to 99%). The combination
Ir-MaxPHOX 型催化剂在各种具有不同几何形状、取代模式和功能化程度的非螯合烯烃的加氢中表现出高催化性能。这些空气稳定且易于获得的催化剂已成功应用于二、三和四取代烯烃(ee 高达 99%)的不对称氢化。理论计算和氘标记实验相结合,揭示了导致反应中观察到的对映选择性的因素,从而使这些 Ir 催化剂的最合适底物合理化。