SmI<sub>2</sub>-Promoted Radical Addition Reactions with <i>N</i>-(2-Indolylacyl)oxazolidinones: Synthesis of Bisindole Compounds
作者:Karl B. Lindsay、Francesc Ferrando、Kasper L. Christensen、Jacob Overgaard、Tomàs Roca、M.-Lluïsa Bennasar、Troels Skrydstrup
DOI:10.1021/jo070273d
日期:2007.5.1
major product isolated in yields from 55 to 59% represents an unsymmetrical dimer arising from 1,4-addition to the 2-indolecarboxylic acid derivative of a possible ketyl-type radical anion intermediate originating from the reduction of the exocyclic carbonyl group of the N-acyl oxazolidinone. The minor dimer, represented by a symmetrical diketone, was produced in yields ranging from 11 to 23%. Even in the