Utility of Organoboron Reagents in Arylation of Cyclopropanols via Chelated Pd(II) Catalysis: Chemoselective Access to β-Aryl Ketones
作者:Thangeswaran Ramar、Murugaiah A. M. Subbaiah、Andivelu Ilangovan
DOI:10.1021/acs.joc.0c00160
日期:2020.6.19
Organoborane reagents were investigated as coupling partners to cyclopropanol-derived β-ketone enolates in the presence of a chelated Pd(II) catalyst. Efficient coupling of a range of electronically and sterically diverse cyclopropanols and aryl/alkenyl boronic derivatives (39 examples, 65–94% yield) could be achieved with the generation of synthetically important β-aryl ketone intermediates in a chemoselective
Ligated Regioselective PdII Catalysis to Access β-Aryl-Bearing Aldehydes, Ketones, and β-Keto Esters
作者:Mari Vellakkaran、Murugaiah M. S. Andappan、Nagaiah Kommu
DOI:10.1002/ejoc.201200770
日期:2012.9
arylative isomerization of allyl alcohols, a milder and regioselectiveaccess to the versatile building blocks β-aryl aldehydes and ketones was developed. This new and chelation-controlled protocol enabled the compatibility of wide range of functionalities to generate dihydrochalcones, α-benzyl-α′-alkyl acetones, dihydrocinnamaldehydes, and α-benzyl β-keto esters (from Baylis–Hillman adducts). A practical