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,
Highly Diastereoselective Addition of Lithio Vinyl Sulfoxides to <i>N</i>-Sulfinimines: An Entry to Enantiopure 3-Sulfinyl-2,5-<i>cis</i>-dihydropyrroles
作者:Alma Viso、Roberto Fernández de la Pradilla、Mercedes Ureña、Ignacio Colomer
DOI:10.1021/ol801878f
日期:2008.11.6
The addition of enantiopure alpha-metalated vinyl and dienyl sulfoxides to enantiomerically pure N-sulfinimines takes place with high diastereoselectivity primarily directed by the N-sulfinimine sulfur. The resulting allylic amines have been further transformed into highly functionalized 3-sulfinyl and 3-sulfonyl 2,5-cis-dihydropyrroles by reaction with electrophiles.