Applications of the Sulfinimine-Mediated Asymmetric Strecker Synthesis to the Synthesis of α-Alkyl α-Amino Acids
作者:Franklin A. Davis、Seung Lee、Huiming Zhang、Dean L. Fanelli
DOI:10.1021/jo001179z
日期:2000.12.1
yields. The diastereoselectivity is largely dependent on the E/Z isomer ratio of the ketosulfinimine. Hydrolysis of the diastereomerically pure amino nitriles affords enantiopure alpha-alkyl alpha-amino acids in moderate to good yields.
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.
A novel domino reaction for the preparation of substituted non-racemic β-proline derivatives
作者:Eric J. Gilbert、Andrew Brunskill、Jiaqiang Cai、Yaxian Cai、Xin-Jie Chu、Xing Dai、Jinsong Hao、Jeffrey T. Kuethe、Zhong Lai、Hong Liu、Cuizhi Mu、Yan Qi、Jack D. Scott、Brandon Taoka、Quang Truong、Shawn P. Walsh、Wen-Lian Wu、Jared N. Cumming
DOI:10.1016/j.tet.2016.08.017
日期:2016.10
A novel domino reaction for the preparation of non-racemic β-proline derivatives is reported. The addition of a methyl 2-(oxetan-3-yl)acetate titanium enolate to chiral tert-butanesulfinyl ketimines followed by an intramolecular oxetane ring-opening provides the highly-substituted pyrrolidine ring systems with three contiguous stereogenic centers.
Asymmetric Aza-Mannich Reactions of Sulfinimines: Scope and Application to the Total Synthesis of a Bromopyrrole Alkaloid
作者:James C. Lanter、Hongfeng Chen、Xuqing Zhang、Zhihua Sui
DOI:10.1021/ol0525258
日期:2005.12.1
[reaction: see text] An asymmetric intermolecular aza variant of the Mannich reaction is reported utilizing chiral sulfinimine anions as the nucleophile and N-sulfonyl aldimines as the electrophilic component. A wide range of nucleophiles and electrophiles are tolerated by the reaction conditions, delivering the condensation products in good to excellent yield with a high degree of stereocontrol. Application
Highly efficient asymmetric construction of quaternary carbon-containing homoallylic and homopropargylic amines
作者:Tao Guo、Ran Song、Bin-Hua Yuan、Xiao-Yang Chen、Xing-Wen Sun、Guo-Qiang Lin
DOI:10.1039/c3cc42481b
日期:——
A highly efficient method for the asymmetric synthesis of chiral quaternary carbon-containing homoallylic and homopropargylic amines under mild conditions was achieved with good yields and high diastereoselectivities.