The New Synthesis of Azo Compounds by 4-Hydroxy-2,2,6,6-Tertramethyl-L-Piperidinyloxyl as the Phases Transfer Dehydrogenation Catalyst
作者:Xiao-Yang Wang、Yu-Lu Wang、Jian-Ping Li、Zi-Yi Zhang
DOI:10.1080/00397919908085748
日期:1999.1.1
Abstract Using 4-hydroxy-2,2,6,6-tertramethyl-l-piperidinyloxyl as the phases transfer dehydrogenation catalyst to prepare azo compounds is reported first time, ten N, 2-diaryl diazenecarboxamides were synthesized in high yield under mild condition. A possible mechanism was suggested by a nitroxide free radical which acted on substituted semicarbazides to form azo compounds.
摘要 首次报道了以4-羟基-2,2,6,6-四甲基-1-哌啶基氧基为相转移脱氢催化剂制备偶氮化合物,在温和条件下高收率合成了10种N,2-二芳基二氮烯甲酰胺。一种可能的机制是硝基氧自由基作用于取代氨基脲形成偶氮化合物。