Remote stereocontrol by sulfinyl groups: hydrocyanation of δ-ketosulfoxides
作者:José L. García Ruano、M. Ángeles Fernández-Ibáñez、M. Carmen Maestro、M. Mercedes Rodríguez-Fernández
DOI:10.1016/j.tet.2005.10.067
日期:2006.2
Et2AlCN in the presence of Yb(OTf)3 take place in a completely stereoselective manner, demonstrating the efficiency of the sulfinyl group in the control of the stereoselectivity of 1,5-asymmetric hydrocyanation processes as well as the ability of Yb(OTf)3 to form chelated species with ketosulfoxides. The behavior of their methylderivatives at the benzylic position is dependent on the configuration at