作者:Xuming Li、Xiaohan Ye、Chiyu Wei、Chuan Shan、Lukasz Wojtas、Qilin Wang、Xiaodong Shi
DOI:10.1021/acs.orglett.0c01232
日期:2020.6.5
reported. The diazenium intermediate was found to undergo cyclization to give indazoles in excellent yields. Alternatively, in the presence of nitriles, substituted 1,2,4-triazoles were obtained in good to excellent yields. This interesting diazenium route provides a new approach to achieve complex heterocycle synthesis under mild conditions.
报道了一种供体/受体重氮活化策略,即使用重氮盐通过缩合进行处理,而无需添加任何其他催化剂或试剂。发现 diazenium 中间体经过环化以极好的产率产生吲唑。或者,在腈的存在下,取代的 1,2,4-三唑以良好至优异的收率获得。这种有趣的二氮酮路线提供了一种在温和条件下实现复杂杂环合成的新途径。