Remote Stereocontrol Mediated by a Sulfinyl Group: Synthesis of Allylic Alcohols via Chemoselective and Diastereoselective Reduction of γ-Methylene δ-Ketosulfoxides
作者:José L. García Ruano、M. Ángeles Fernández-Ibáñez、José A. Fernández-Salas、M. Carmen Maestro、Pablo Márquez-López、M. Mercedes Rodríguez-Fernández
DOI:10.1021/jo802378s
日期:2009.2.6
diastereoselectivity of the reduction of α,β-unsaturated α-[2-(p-tolylsulfinyl)phenyl] substitutedketones 1 has been demonstrated in reactions carried out under NaBH4 in the presence of Yb(OTf)3 as the chelating agent. The starting unsaturated ketones have been prepared from the corresponding 2-(p-tolylsulfinyl) benzyl alkyl (and aryl) ketones 2 by insertion of the methylidene group under modified Mannich conditions
Wittig-Horner Reaction in Heterogeneous Media; V<sup>1</sup>. An Efficient Synthesis of α-Methylenecarboxylic Esters and α-Methyleneketones under Mild Conditions
作者:Jean Villiéras、Monique Rambaud
DOI:10.1055/s-1984-30854
日期:——
VILLIERAS, J.;RAMBAUD, M., SYNTHESIS, BRD, 1984, N 5, 406-408