Alkoxydienes via Copper-Promoted Couplings: Utilizing an Alkyne Effect
作者:David J. Winternheimer、Craig A. Merlic
DOI:10.1021/ol100707s
日期:2010.6.4
copper-based coupling (modern Ullmann) reactions. This enabled syntheses of various alkoxydienes with removable protecting groups that are valuable substrates for Diels−Alder reactions from alcohols and vinyl boronate esters. In addition to demonstrating that 3-hexyne is a ligand for copper in both stoichiometric and catalytic reactions, the reaction atmosphere was found to play a critical role.