Seven-Membered Rings through Metal-Free Rearrangement Mediated by Hypervalent Iodine
作者:Siguara Silva、Adriana Torre、João de Carvalho、Ana Ruiz、Luiz Silva
DOI:10.3390/molecules20011475
日期:——
for the synthesis of carbocycles and of heterocycles bearing seven- and eight-membered rings is described. The strategy is based on ring expansion of 1-vinylcycloalkanols (or the corresponding silyl or methyl ether) mediated by the hypervalent iodine reagent HTIB (PhI(OH)OTs). Reaction conditions can be easily adjusted to give ring expansion products bearing different functional groups. A route to medium-ring