Asymmetric synthesis of 2-substituted chroman-4-ones using lipase-catalyzed kinetic resolutions
摘要:
2-Methylchroman-4-one and 2-phenylchroman-4-one were synthesized in optically active form. Their chiral intermediates were obtained via lipase-catalyzed enantioselective reactions. (C) 2003 Elsevier Science Ltd. All rights reserved.
Minimizing Aryloxy Elimination in Rh
<sup>I</sup>
‐Catalyzed Asymmetric Hydrogenation of β‐Aryloxyacrylic Acids using a Mixed‐Ligand Strategy
作者:Yang Li、Zheng Wang、Kuiling Ding
DOI:10.1002/chem.201503229
日期:2015.11.9
The first example of efficientasymmetrichydrogenation of challenging β‐aryloxyacrylic acids was realized using a RhI‐complex based on the heterocombination of a readilyavailable chiral monodentate secondary phosphine oxide (SPO) and an achiral monodentate phosphine ligand as the catalyst. Excellent enantioselectivities (92–>99 % ee) were achieved for a wide variety of chiral β‐aryloxypropionic acids
2-Methylchroman-4-one and 2-phenylchroman-4-one were synthesized in optically active form. Their chiral intermediates were obtained via lipase-catalyzed enantioselective reactions. (C) 2003 Elsevier Science Ltd. All rights reserved.