Mild metal-free syn-stereoselective ring opening of activated epoxides and aziridines with aryl borates
作者:Mauro Pineschi、Ferruccio Bertolini、Robert M. Haak、Paolo Crotti、Franco Macchia
DOI:10.1039/b416517a
日期:——
A conceptually new, simple and practical method for the syn-nucleophilic displacement of aryl and vinyl epoxides and aryl aziridines with (substituted) phenols, using aryl borates as activating nucleophiles under neutral conditions, is reported.
A conceptually new regioselective and highly syn-stereoselective intermolecular Friedel–Crafts-type O-alkylation of phenols with aryl epoxides by the use of appropriately substituted aryl borates is reported. The carbon–carbon bond formation occurs in neutral and mild conditions without the need for external Lewis acids or transition metal catalysts.