The resolutions of five racemic cyclic alcohols: 6,6-dimethylcyclohex-2-en-1-ol (±)-5, 4,4-dimethylcyclohex-2-en-1-ol (±)-7, 5,5-dimethylcyclohex-2-en-1-ol (±)-11 and isomeric trans-(±)-13 and cis-piperitols (±)-14 are presented. They were resolved by enzymatic esterification with vinyl esters or by enzymatic hydrolysis of their racemic esters in phosphate buffer. The following lipases were used as
Rational Design of a Facially Coordinating
<i>P,N,N</i>
Ligand for Manganese‐Catalysed Enantioselective Hydrogenation of Cyclic Ketones
作者:Conor L. Oates、Alister S. Goodfellow、Michael Bühl、Matthew L. Clarke
DOI:10.1002/anie.202212479
日期:2023.1.16
A Mn catalyst has been rationally redesigned to repel sp3hybridised substituents while attracting sp2 substituents, and hence enable enantioselectivehydrogenation of cyclicketones. DFT calculations enable a robust prediction of the level of enantiocontrol across a range of substrates.