Isothiourea‐Catalysed Regioselective Acylative Kinetic Resolution of Axially Chiral Biaryl Diols
作者:Shen Qu、Mark D. Greenhalgh、Andrew D. Smith
DOI:10.1002/chem.201805631
日期:2019.2.21
An operationally simple isothiourea‐catalysed acylative kineticresolution of unprotected 1,1′‐biaryl‐2,2′‐diol derivatives has been developed to allow access to axiallychiral compounds in highly enantioenriched form (s values up to 190). Investigation of the reaction scope and limitations provided three key observations: i) the diol motif of the substrate was essential for good conversion and high
An efficient microbial resolution of 2,2′-dihydroxy-1,1′-binathyl has been achieved by exposing the corresponding dibutyrate to Bacillus sp; the importance of the size of the ester group for hydrolysis rate and selectivity is emphasized.