Highly Regioselective Synthesis of Tetrahydro-2<i>H</i>-1,3-thiazin-2-ones via Rhodium-Catalyzed Carbonylation of <i>N</i>-Alkylisothiazolidines
作者:Chune Dong、Howard Alper
DOI:10.1021/ol048706b
日期:2004.9.1
The [Rh(COD)Cl](2)- and KI-catalyzed carbonylation of functionalized N-alkylisothiazolidines in toluene gives the corresponding tetrahydro-2H-1,3-thiazin-2-ones in good yield. The carbonylation reaction occurred site-selectively at the S-N bond of the isothiazolidine ring. The reaction is believed to proceed via oxidative addition, followed by CO insertion and reductive elimination to form the tetrahydro-2H-1,3-thiazin-2-one derivatives.
MATSUYAMA, HARUO;IZUOKA, AKIRA;KOBAYASHI, MICHIO, HETEROCYCLES, 1985, 23, N 8, 1897-1900