Asymmetric Synthesis of Quaternary α-Amino Phosphonates Using Sulfinimines
摘要:
The addition of lithium diethylphosphonate to enantiopure ketosulfinimines is highly diastereoselective (> 95%), affording the first examples of quaternary a alkyl ol-amino (arylmethyl)phosphonates.
Highly Stereoselective Benzylation of <i>N</i>-Sulfinylketimines
作者:José Luis García Ruano、José Alemán、Alejandro Parra
DOI:10.1021/ja0515203
日期:2005.9.1
epimer of alpha,alpha-dibranched beta-alkylarylamines in opticallypure form by choosing the configuration of the starting materials. A similar behavior is observed for carbanions derived from the O-protected 2-(p-tolylsulfinyl) benzyl alcohol 7 thus allowing the synthesis of the opticallypure anti- and syn-1,2-amino alcohols containing a chiral quaternary carbon adjacent to the nitrogen.
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.
Asymmetric Synthesis of Quaternary α-Amino Phosphonates Using Sulfinimines
作者:Franklin A. Davis、Seung Lee、Hongxing Yan、Donald D. Titus
DOI:10.1021/ol015945f
日期:2001.5.1
The addition of lithium diethylphosphonate to enantiopure ketosulfinimines is highly diastereoselective (> 95%), affording the first examples of quaternary a alkyl ol-amino (arylmethyl)phosphonates.