作者:Paul Wienecke、Hans-Dieter Arndt
DOI:10.1021/acs.orglett.3c00176
日期:2023.2.24
A novel method for C–H cyanation of different pyrans, pyrroles, indoles, and acyclic nucleophilic double bonds using TMSCN, NIS, and Zn(OTf)2 as a catalyst is described. The transformation is conducted under mild conditions tolerating a variety of functional groups. Zn(OTf)2 is likely to serve a dual catalytic role as an activator for TMSCN and for the cyanogen iodide generated in situ. Optimization
描述了一种使用 TMSCN、NIS 和 Zn(OTf) 2作为催化剂对不同吡喃、吡咯、吲哚和无环亲核双键进行 C-H 氰化的新方法。转化是在温和的条件下进行的,可以接受各种官能团。Zn(OTf) 2可能作为 TMSCN 和原位生成的碘化氰的活化剂发挥双重催化作用。报告了优化、底物范围和机械观察结果。此外,该方法应用于天然产物nannozinone B的首次全合成。