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吡喃糖苷膦酸酯-噁唑啉配体在多功能和对映选择性的 Ir 催化氢化最小官能化烯烃中的应用。理论与实验研究。

Pyranoside phosphite-oxazoline ligands for the highly versatile and enantioselective ir-catalyzed hydrogenation of minimally functionalized olefins. A combined theoretical and experimental study.

机构信息

Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Campus Sescelades, C/Marcel·lí Domingo, s/n. 43007 Tarragona, Spain.

出版信息

J Am Chem Soc. 2011 Aug 31;133(34):13634-45. doi: 10.1021/ja204948k. Epub 2011 Aug 4.

DOI:10.1021/ja204948k
PMID:21761872
Abstract

A modular set of phosphite-oxazoline (P,N) ligands has been applied to the title reaction. Excellent ligands have been identified for a range of substrates, including previously challenging terminally disubstituted olefins, where we now have reached enantioselectivities of 99% for a range of substrates. The selectivity is best for minimally functionalized substrates with at least a moderate size difference between geminal groups. A DFT study has allowed identification of the preferred pathway. Computational prediction of enantioselectivities gave very good accuracy.

摘要

一套模块化的亚膦酸-噁唑啉(P,N)配体已被应用于该反应。已经为一系列底物鉴定了出色的配体,包括以前具有挑战性的末端二取代烯烃,我们现在已经为一系列底物达到了 99%的对映选择性。选择性最好的是具有最小官能团的底物,偕二甲基之间至少有适度的尺寸差异。DFT 研究允许确定首选途径。对映选择性的计算预测具有非常高的准确性。

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