Title of article :
Novel rearrangement of N-enoyl oxazolidinethiones to N-substituted 1,3-thiazine-2,4-diones promoted by NbCl5
Author/Authors :
Hernلndez، نويسنده , , Hector and Bernès، نويسنده , , Sylvain and Quintero، نويسنده , , Leticia and Sansinenea، نويسنده , , Estibaliz and Ortiz، نويسنده , , Aurelio، نويسنده ,
Abstract :
NbCl5 has been employed as promoter of a novel rearrangement to afford chiral N-substituted 1,3-thiazine-2,4-diones with one or two new stereogenic centers from di- and trisubstituted N-enoyl oxazolidinethiones. The trisubstituted E-isomers provide the anti-diastereomers mainly.
