The reaction of indole derivatives bearing a 3- or 4-hydroxyalkyl chain with dimethyl sulfoxide and oxalyl chloride under Swern conditions led to a one-pot process involving three different synthetic transformations, namely oxidation of indole to oxindole, introduction of a chlorine substituent at the oxindole C-3 position, and substitution of the hydroxyl group in the side chain by chlorine. In spite
Efficient, one-pot transformation of indoles into functionalized oxindole and spirooxindole systems under Swern conditions
作者:Pilar López-Alvarado、Judith Steinhoff、Sonia Miranda、Carmen Avendaño、J. Carlos Menéndez
DOI:10.1016/j.tet.2008.12.029
日期:2009.2
and oxalyl chloride under Swern conditions led to a one-pot, three-component process involving three different synthetic transformations, namely oxidation of indole to oxindole, introduction of a chlorine substituent at the oxindole C-3 position and substitution of the hydroxyl group in the side chain by chlorine, in good to excellent overall yields. The same conditions, applied to a 2-methylindole, afforded