NOVEL CHIRAL DIHYDROBENZOOXAPHOSPHOLE LIGANDS AND SYNTHESIS THEREOF
申请人:Boehringer Ingelheim International GmbH
公开号:US20180155375A1
公开(公告)日:2018-06-07
This invention relates to novel phosphorous ligands useful for organic transformations. Methods of making and using the ligands in organic synthesis are described. The invention also relates to processes for preparing the novel ligands.
Synthesis of Pyridyl-dihydrobenzooxaphosphole Ligands and Their Application in Asymmetric Hydrogenation of Unfunctionalized Alkenes
作者:Bo Qu、Lalith P. Samankumara、Jolaine Savoie、Daniel R. Fandrick、Nizar Haddad、Xudong Wei、Shengli Ma、Heewon Lee、Sonia Rodriguez、Carl A. Busacca、Nathan K. Yee、Jinhua J. Song、Chris H. Senanayake
DOI:10.1021/jo4024864
日期:2014.2.7
ligands were designed and synthesized by a diastereoselective SNAr substitution of the corresponding sulfonyl pyridines. The ligands were successfully applied in the Ir-catalyzed asymmetrichydrogenation of unfunctionalizedalkenes with good enantioselectivities.
提出了富电子的2-取代的6-(苯磺酰基)吡啶的合成。通过相应的磺酰基吡啶的非对映选择性的S N Ar取代,设计和合成了一系列空气稳定的,可调节的P-手性吡啶基-二氢苯并恶唑磷配体。该配体已成功应用于具有良好对映选择性的Ir催化未官能化烯烃的不对称氢化反应。
[EN] NOVEL CHIRAL NITROGEN-PHOSPHORUS LIGANDS AND THEIR USE FOR ASYMMETRIC HYDROGENATION OF ALKENES<br/>[FR] NOUVEAUX LIGANDS D'AZOTE-PHOSPHORE CHIRAUX ET LEUR UTILISATION POUR L'HYDROGÉNATION ASYMÉTRIQUE D'ALCÈNES
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2015006458A1
公开(公告)日:2015-01-15
The invention relates to a series of novel chiral nitrogen-phosphorus ligands of formulae (Ia) and (Ib): wherein R1-R3 and X are as defined herein. The invention also relates to chiral metal complexes prepared with these chiral nitrogen-phosphorus ligands. The chiral metal complexes are useful as catalysts for carrying out asymmetric hydrogenation.