Synthetic Studies toward 3-(Acylamino)-1H-indazoles and Development of a One-Pot, Microwave-Assisted, Oxadiazole Condensation/Boulton-Katritzky Rearrangement
作者:Gregory Ott、Andrew Anzalone
DOI:10.1055/s-0031-1289893
日期:2011.12
devised that allows access to rearrangement products in good to excellent isolated yields. Furthermore, we have developed a two-component, one-pot sequence using a microwave-assisted oxadiazole condensation/Boulton-Katritzky rearrangement to deliver 3-(acylamino)-1H-indazoles from simple esters and 2-amino-N-hydroxy-benzamidine Boulton-Katritzky rearrangement - indazole - microwave-assisted - oxadiazole
对3-(2-氨基芳基)-1,2,4-恶二唑的Boulton-Katritzky重排的研究导致确定了控制重排以及选择底物竞争性热重排途径的其他电子因素。为了避免常规热转化序列的局限性,已设计出一种采用微波辐射的改进方案,该方案允许以良好的分离产率良好地获得重排产物。此外,我们已经开发了一种使用微波辅助的恶二唑缩合/ Boulton-Katritzky重排的两组分,一锅法序列,以从简单的酯和2-氨基-N-羟基-生成3-(酰基氨基)-1 H-吲唑。苯甲idine Boulton-Katritzky重排-吲唑-微波辅助-恶二唑缩合-取代基效应