One-Pot Asymmetric Synthesis of Either Diastereomer of tert-Butanesulfinyl-protected Amines from Ketones
摘要:
[GRAPHIC]A one-pot method for the asymmetric synthesis of tert-butanesulfinyl-protected amines is described. Condensation of aryl alkyl and dialkyl ketones with tert-butanesulfinamide followed by in situ reduction with the appropriate reagent provides either diastereomer of the sulfinamide products in good yields and with diastereomeric ratios of up to 99:1.
Reversal of Diastereofacial Selectivity in Hydride Reductions of <i>N</i>-<i>tert</i>-Butanesulfinyl Imines
作者:John T. Colyer、Neil G. Andersen、Jason S. Tedrow、Troy S. Soukup、Margaret M. Faul
DOI:10.1021/jo0609834
日期:2006.9.1
same sulfinyl imine starting materials and changing the reductant to L-Selectride, the stereoselectivity could be efficiently reversed to afford the opposite product diastereomer in high yield and selectivity.
One-Pot Asymmetric Synthesis of Either Diastereomer of <i>tert</i>-Butanesulfinyl-protected Amines from Ketones
作者:Jessica Tanuwidjaja、Hillary M. Peltier、Jonathan A. Ellman
DOI:10.1021/jo0616512
日期:2007.1.1
[GRAPHIC]A one-pot method for the asymmetric synthesis of tert-butanesulfinyl-protected amines is described. Condensation of aryl alkyl and dialkyl ketones with tert-butanesulfinamide followed by in situ reduction with the appropriate reagent provides either diastereomer of the sulfinamide products in good yields and with diastereomeric ratios of up to 99:1.
A Versatile Ru Catalyst for the Asymmetric Transfer Hydrogenation of Both Aromatic and Aliphatic Sulfinylimines
A highly efficient Ru catalyst based on an achiral, very simple, and inexpensive amino alcohol ligand (2‐amino‐2‐methylpropan‐1‐ol) has been developed for the asymmetric transfer hydrogenation (ATH) of chiralN‐(tert‐butylsulfinyl)imines. This complex is able to catalyze the ATH of both aromatic and the most challenging aliphatic sulfinylimines by using isopropyl alcohol as the hydrogen source. The