Enantioselective Synthesis of Tertiary Alcohols through a Zirconium-Catalyzed Friedel–Crafts Alkylation of Pyrroles with α-Ketoesters
作者:Gonzalo Blay、Isabel Fernández、M. Carmen Muñoz、José R. Pedro、Alejandro Recuenco、Carlos Vila
DOI:10.1021/jo2010704
日期:2011.8.5
Chiral complexes of 1,1′-bi-2-naphthol-based ligands with zirconium tert-butoxide catalyze the Friedel–Craftsalkylation of pyrroles with α-ketoesters to afford tertiary alcohols in good yields and ee up to 98%. The reaction is also of application to 4,7-dihydroindole to give C2-alkylated indoles after oxidation with p-benzoquinone.