作者:Shrey P. Desai、Matthew T. Zambri、Mark S. Taylor
DOI:10.1021/acs.joc.2c00281
日期:2022.4.15
described. In the presence of diphenylborinic acid (Ph2BOH) and an amine cocatalyst, heterocyclic nucleophiles such as 1,2,3- and 1,2,4-triazoles, substituted tetrazoles, and purine are activated toward selective N-functionalization. The scope of electrophilic partners includes enones, 2-vinylpyridine, phenyl vinyl sulfone, a dehydroalanine derivative, and epoxides. Mechanistic studies, including in situ
描述了一种用烯烃或环氧化物亲电子试剂对周围的唑型杂环进行区域选择性N-烷基化的方法。在二苯基硼酸 (Ph 2 BOH) 和胺助催化剂的存在下,杂环亲核试剂如 1,2,3-和 1,2,4-三唑、取代的四唑和嘌呤被活化为选择性N官能化。亲电子伙伴的范围包括烯酮、2-乙烯基吡啶、苯基乙烯基砜、脱氢丙氨酸衍生物和环氧化物。讨论了机理研究,包括原位11 B NMR 光谱和动力学分析。