Enantiopure 1,4-Diols and 1,4-Aminoalcohols via Stereoselective Acyclic Sulfoxide−Sulfenate Rearrangement
作者:Roberto Fernández de la Pradilla、Ignacio Colomer、Mercedes Ureña、Alma Viso
DOI:10.1021/ol200718y
日期:2011.5.6
Treatment of acyclic α-hydroxy and α-tosylamino sulfinyl dienes with amines affords enantiopure 1,4-diol or 1,4-hydroxysulfonamide derivatives in good yields and diastereoselectivities. This one-pot procedure entails a conjugate addition that triggers a diastereoselective sulfoxide−sulfenate [2,3]-sigmatropic rearrangement.
Sulfinyl‐Mediated Stereoselective Functionalization of Acyclic Conjugated Dienes
作者:Ignacio Colomer、Mercedes Ureña、Alma Viso、Roberto Fernández de la Pradilla
DOI:10.1002/chem.201905742
日期:2020.4.6
stereocontrolled functionalization of conjugated sulfinyl dienes in a cascade process that involves a Michael-type addition, isomerization of a double bond and a [2,3]-sigmatropic rearrangement is reported. Enantioenriched 1,4-diol and 1,4-aminoalcohol derivatives are obtained in a very straightforward manner. Further functionalization of these structures, including highly stereoselective epoxidation,
Nucleophilic Epoxidation of α‘-Hydroxy Dienyl Sulfoxides
作者:Roberto Fernández de la Pradilla、Pilar Manzano、Carlos Montero、Julián Priego、Martín Martínez-Ripoll、Luis A. Martínez-Cruz
DOI:10.1021/jo0349173
日期:2003.10.1
densely functionalized epoxy sulfinyl tetrahydrofurans, based on the unexpected and highlystereoselective remote nucleophilic epoxidation of hydroxy 1-sulfinyl butadienes with t-BuOOK, followed by ringclosure and subsequent epoxidation of the resulting sulfinyl dihydrofurans, is described. Alternatively, the treatment of these dienes with m-CPBA followed by acid-catalyzed cyclization gives rise to related