Enantiospecific Synthesis and Allylation of All-Carbon-Substituted α-Chiral Allylic Stannanes

摘要

Stereodefined a-chiral allylic stannanes are well-established nucleophilic allyl-transfer reagents in reagent-controlled asymmetric synthesis. Sufficient chemical stability is commonly secured by oxygenation at the a or the γ carbon atom of these secondary tin compounds, whereas allylic systems devoid of heteroatom substitution are fragile as a result of a pronounced tendency toward 1,3-tin migration or even decomposition.