Iodine(III)-Promoted Ring Expansion of 1-Vinylcycloalkanol Derivatives: A Metal-Free Approach toward Seven-Membered Rings
作者:Luiz F. Silva,、Ramon S. Vasconcelos、Mário A. Nogueira
DOI:10.1021/ol800048f
日期:2008.3.1
A versatile and metal-free approach for the synthesis of molecules bearing seven- and eight-membered rings is described. The strategy is based on the ringexpansion of 1-vinylcycloalkanols (or the corresponding silyl or methyl ether) mediated by the hypervalent iodine reagent HTIB (PhI(OH)OTs). The reaction condition can be easily adjusted to give seven-membered rings bearing different functional groups
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