Diastereoselectivity in cyclopropanation and epoxidation reactions of chiral (E)-crotylsilanes: Asymmetric synthesis of substituted tetrahydrofurans
作者:James S. Panek、Robert M. Garbaccio、Nareshkumar F. Jain
DOI:10.1016/s0040-4039(00)78244-x
日期:1994.8
Functionalized (E)-crotylsilanes 1 bearing a bis-homoallylic hydroxyl group undergo diastereoselective cyclopropanation and epoxidation reactions to produce substitutedtetrahydrofurans 3 and 5 respectively after an acid catalyzed heterocyclization.
Stereocontrolled Synthesis of Spirooxindoles through Lewis Acid-Promoted [5 + 2]-Annulation of Chiral Silyl Alcohols
作者:Yun Zhang、James S. Panek
DOI:10.1021/ol901202t
日期:2009.8.6
The enantioselective synthesis of stereochemically and structurally diverse spirocyclic oxindoles by [5 + 2]-annulation of chiral crotylsilanes bearing a primary alcohol is described. The annulation products were further elaborated to polycyclic oxindoles by Pd(0) catalysis.
Lewis Acid-Mediated Carbocyclization Reactions of Chiral (<i>E</i>)-Crotylsilanes
作者:Craig E. Masse、Les A. Dakin、Bradford S. Knight、James S. Panek