Copper(I)-Mediated 1,2-Metallate Rearrangements of 1-Metallated Glycals

Krzysztof Jarowicki, Philip Kocieński, Zofia Komsta & Anna Wojtasiewicz
1,2-Metallate rearrangements involving reaction of 1-metallated glycals with organolithium reagents under copper(I) mediation give alkenylpolyol chains in 45-91% yield (19 examples). The reaction was applied to a formal synthesis of KRN7000 as well as a synthesis of a Δ5,6-ceramide derivative.