Synthesis of Enantiopure Sulfinimines (Thiooxime S-Oxides) Catalyzed by Yb(OTf)3 from p-Toluenesulfinamide and Aldehydes in Mild Reaction Conditions
摘要:
Enantiomerically pure sulfinimines as important building blocks in the asymmetric synthesis of amine derivatives are prepared in good to excellent yields from chiral p-toluenesulfinamide with aromatic, heteroaromatic, and aliphatic aldehydes. The unprecedented feature of the reported procedure is that the formation of the sulfinimines was achieved by the catalytic action of Yb(OTf)(3) in THF at room temperature. The reaction conditions were also applicable to Ellman's sulfinimines.
Highly Diastereoselective Addition of the Lithium Enolate of α-Diazoacetoacetate to <i>N</i>-Sulfinyl Imines: Enantioselective Synthesis of 2-Oxo and 3-Oxo Pyrrolidines
作者:Changqing Dong、Fanyang Mo、Jianbo Wang
DOI:10.1021/jo702275a
日期:2008.3.1
The highly enantioselective synthesis of 2-oxo and 3-oxo pyrrolidines has been achieved by diastereoselective addition of the lithiumenolate of α-diazoacetoacetate to chiral N-sulfinyl imines, followed by photoinduced Wolff rearrangement or Rh(II)-catalyzed intramolecular N−H insertion.
Stereoselective addition to chiral p-toluene sulfinimines
作者:Wing Hong Chan、Albert W.M Lee、Ping Fang Xia、Wai Yeung Wong
DOI:10.1016/s0040-4039(00)00949-7
日期:2000.7
Diastereoselective addition of a number of Grignard reagents to chiral p-toluene sulfinimines 2b–2d under the mediation of copper salts afforded various protected α-branched amines.
Synthesis of Enantiopure Sulfinimines (Thiooxime <i>S</i>-Oxides) Catalyzed by Yb(OTf)<sub>3</sub> from <i>p</i>-Toluenesulfinamide and Aldehydes in Mild Reaction Conditions
作者:Zhi-Yong Jiang、W. H. Chan、A. W. M. Lee
DOI:10.1021/jo048597e
日期:2005.2.1
Enantiomerically pure sulfinimines as important building blocks in the asymmetric synthesis of amine derivatives are prepared in good to excellent yields from chiral p-toluenesulfinamide with aromatic, heteroaromatic, and aliphatic aldehydes. The unprecedented feature of the reported procedure is that the formation of the sulfinimines was achieved by the catalytic action of Yb(OTf)(3) in THF at room temperature. The reaction conditions were also applicable to Ellman's sulfinimines.