Highly active phosphite gold(i) catalysts for intramolecular hydroalkoxylation, enyne cyclization and furanyne cyclization†
Abstract
New and highly active mononuclear phosphite gold(I) catalysts are described. Turn-over numbers up to 37 000 for the furan–yne reaction and up to 28 000 000 for the two-fold hydroalkoxylation of alkynes are reported.