Lanthanum‐Catalyzed Enantioselective Trifluoromethylation by Using an Electrophilic Hypervalent Iodine Reagent
作者:Albert Granados、Iván Rivilla、Fernando P. Cossío、Adelina Vallribera
DOI:10.1002/chem.201900598
日期:2019.6.21
A highlyenantioselectivecatalytic method for the synthesis of quaternary α‐trifluoromethyl derivatives of 3‐oxo esters is described. The reactionuses lanthanum(III) triflate and chiral PyBOX‐type C2‐symmetric ligands to generate intermediate LaIII complexes that incorporate an enolate moiety of the starting 3‐oxo ester and the trifluoromethylation transferreagent. The enantioselectivity of the