Rhodium-Catalyzed Conjugate Addition−Enantioselective Protonation: The Synthesis of α,α‘-Dibenzyl Esters
作者:Christopher G. Frost、Stephen D. Penrose、Kim Lambshead、Paul R. Raithby、John E. Warren、Robert Gleave
DOI:10.1021/ol070603g
日期:2007.5.1
Alpha-benzyl acrylates, which are conveniently prepared from the corresponding aldehydes, can be employed as substrates in a tandem rhodium-catalyzed conjugate addition-enantioselective protonation protocol to afford enantiomerically enriched alpha,alpha'-dibenzyl esters. The synergistic effect of enantiopure ligand and proton source was rapidly optimized with use of a microwave reactor.
由相应的醛方便地制备的丙烯酸α-苄基酯可以在串联铑催化的共轭加成-对映选择性质子化方案中用作底物,以提供对映体富集的α,α′-二苄基酯。对映纯配体与质子源的协同作用可通过使用微波反应器快速优化。