Four-component tandem protocol for the stereoselective synthesis of highly functionalized [1,4]-thiazines
作者:Sethuraman Indumathi、Raju Ranjith Kumar、Subbu Perumal
DOI:10.1016/j.tet.2006.11.093
日期:2007.2
The one-pot, four-component tandem reaction of ethyl 2-[(2-oxo-2-arylethyl)sulfonyl]acetate/ethyl 2+2-ethoxy-2-oxoethyl)sulfonyl] acetate, an aromatic aldehyde and pyrrolidine provides a rapid and facile access to new ethyl 3-aroyl-l-benzyl-2,2-dioxo-4aryloctahydro-2-pyrrolo[2,1-c][1,4]thiazine-l-carboxylates/diethyl 1-benzyl-2,2-dioxo-4-aryloctahydro-2-pyrrolo[2,1-c][1,4]thiazine-1,3dicarboxylates. This reaction shows high stereoselectivity and proceeds in good yields. (c) 2006 Elsevier Ltd. All rights reserved.