Sulfur-directed synthesis of enantiopure hydroxy 2-sulfinyl butadienes
作者:Roberto Fernández de la Pradilla、María Victoria^Martínez、Carlos Montero、Alma Viso
DOI:10.1016/s0040-4039(97)01815-7
日期:1997.11
Epoxy vinyl sulfoxides, generated in situ from sulfinyl chlorohydrins, undergo an efficient base-inducedrearrangement to generate enantiopure hydroxy 2-sulfinyl dienes. The chiral sulfur auxiliary controls the E-Z stereoselectivity of the trisubstitutedalkene.
Highly Diastereoselective Diels-Alder Reactions with Enantiopure Sulfinyl-Substituted 1-Hydroxymethyldienes
作者:Roberto Fernández de la Pradilla、Carlos Montero、Mariola Tortosa、Alma Viso
DOI:10.1002/chem.200500191
日期:2005.8.19
Enantiopure hydroxy-2- and -3-sulfinyldienes undergo highly selective Diels-Alder cycloadditions with various dienophiles controlled by the chiral sulfur atom. The related hydroxy-2-sulfonyldienes display complementary pi-facial selectivity.
Sulfur-Directed Synthesis of Enantiopure Hydroxy 2-Sulfinyl Butadienes
作者:Roberto Fernández de la Pradilla、María Victoria Buergo、María Victoria Martínez、Carlos Montero、Mariola Tortosa、Alma Viso
DOI:10.1021/jo035750g
日期:2004.3.1
The treatment of sulfinyl chlorohydrins with KO-t-Bu in THF generates epoxy vinyl sulfoxides that undergo an efficient base-inducedrearrangement to generate enantiopure hydroxy 2-sulfinyl dienes. This novel process takes place with high chemo- and stereoselectivity. The chirality at sulfur effectively controls the geometry of the trisubstituted alkene.