Exploiting 1,1-Dibromoalkenes as Direct Precursors to 5-Substituted 1,2,3-Triazoles
作者:Alistair Boyer、Matthew B. Williams、Matthew L. Martin、Steffen Wiedmann
DOI:10.1055/s-0042-1751464
日期:2023.11
precursors to three classes of 5-substituted 1,2,3-triazoles. Three different approaches to 1,2,3-triazole products were developed, linked to the N1-substituent. Treatment of 1,1-dibromoalkenes with n-butyllithium and reaction with a sulfonyl azide gave 5-substituted 1-sulfonyl-1,2,3-triazoles. The use of lithium base followed by transmetalation to zinc and reaction with aryl azides allowed access
1,1-二溴烯烃可用作三类 5-取代 1,2,3-三唑的直接前体。开发了三种与N 1-取代基相关的 1,2,3-三唑产品的不同方法。用正丁基锂处理1,1-二溴烯烃并与磺酰叠氮化物反应,得到5-取代的1-磺酰基-1,2,3-三唑。使用锂碱,然后金属转移成锌并与芳基叠氮化物反应,得到1-芳基-1,2,3-三唑。最后,使用 EtMgBr 作为碱并与烷基叠氮化物反应形成 1-烷基-1,2,3-三唑。