Solid-Phase Traceless Synthesis of Selected Nitrogen-Containing Heterocyclic Compounds. The Encore Technique for Directed Sorting of Modular Solid Support
A solid phase traceless synthesis of quinoxalinones
作者:Viktor Krchňák、Lajos Szabo、Josef Vágner
DOI:10.1016/s0040-4039(00)00297-5
日期:2000.4
A solid-phase traceless synthesis of quinoxalinones in three combinatorial steps is reported. An aldehyde functionalizedpolystyreneresin was reductively alkylated by amino acid methyl esters, and then the resin bound secondary amines were reacted with o-fluoronitrobenzenes. The resulting o-nitroanilines were reduced by tin chloride to the dianilines, which spontaneously cyclized. The amide nitrogen