Diastereoselective Synthesis of trans-4,5-Disubstituted Oxazolidin-2-ones and Vicinal Amino Alcohols through Alkylation of N-Acyliminium Ion Intermediates
A facile one-pot synthesis of 3-unsubstituted-2,4-oxazolidinediones via in situ generation of carbamates from α-hydroxyesters using trichloroacetyl isocyanate
作者:Yue H. Li、Li Zhang、Pei-San Tseng、Yongliang Zhang、Yu Jin、Jingkang Shen、Jian Jin
DOI:10.1016/j.tetlet.2008.11.124
日期:2009.2
methodology for the synthesis of pharmaceutically interesting 3-unsubstituted-2,4-oxazolidinediones from α-hydroxyesters is described. A primary carbamate was generated in situ from the corresponding α-hydroxyester and trichloroacetylisocyanate, then converted to the desired 3-unsubstituted 2,4-oxazolidinedione via intramolecular ring closure. This method is amenable to scale-up and requires no chromatographic