Synthesis of functionalised β-lactones via silylcarbocyclisation/desilylation reactions of propargyl alcohols
作者:Laura Antonella Aronica、Caterina Mazzoni、Anna Maria Caporusso
DOI:10.1016/j.tet.2009.10.112
日期:2010.1
alkynol characterised by two alkyl groups on the propargyl carbon atom, significant amounts of the aldehydes were observed for secondary alcohols. In these cases, the use of ortho-substituted arylsilanes improved the chemoselectivity towards the α-methylene-β-lactones. Such molecules were then successfully converted into α-methylaryl-β-lactones by a fluoride-induced rearrangement of the aryl group that migrates