Construction of Contiguous Tetrasubstituted Carbon Stereocenters by Intramolecular Crossed Benzoin Reactions Catalyzed by N-Heterocyclic Carbene (NHC) Organocatalyst
Bicyclic compounds with two contiguous tetrasubstituted carbon stereocenters at bridgehead positions were synthesized by N-heterocyclic carbene (NHC)-catalyzed intramolecular crossed benzoin reactions of symmetrical compounds. This desymmetrization strategy was applied to asymmetricsynthesis with chiral NHC organocatalysts. Transition-state models were proposed to explain the enantioselectivity. A
Stereoselective Synthesis of Bicyclic Tertiary Alcohols with Quaternary Stereocenters via Intramolecular Crossed Benzoin Reactions Catalyzed by <i>N</i>-Heterocyclic Carbenes
Bicyclic tertiary alcohols 1 bearing quaternary stereocenters at the two adjacent bridgehead positions were synthesized with high stereoselectivity via the intramolecular crossed benzoin reactions catalyzed by NHC organocatalysts.
Amupitan, Joseph A.; Scovell, Edward G.; Sutherland, James K., Journal of the Chemical Society. Perkin transactions I, <hi>1983</hi>, # 4, p. 755 - 758
作者:Amupitan, Joseph A.、Scovell, Edward G.、Sutherland, James K.