Copper‐Catalyzed N−F Bond Activation for Uniform Intramolecular C−H Amination Yielding Pyrrolidines and Piperidines
作者:Daniel Bafaluy、José María Muñoz‐Molina、Ignacio Funes‐Ardoiz、Sebastian Herold、Adiran J. de Aguirre、Hongwei Zhang、Feliu Maseras、Tomás R. Belderrain、Pedro J. Pérez、Kilian Muñiz
DOI:10.1002/anie.201902716
日期:2019.6.24
The dual function of the N−F bond as an effective oxidant and subsequent nitrogen source in intramolecular aliphatic C−H functionalization reactions is explored. Copper catalysis is demonstrated to exercise full regio‐ and chemoselectivity control, which opens new synthetic avenues to nitrogenated heterocycles with predictable ring sizes. For the first time, a uniform catalysis manifold has been identified
在分子内脂肪族CH官能化反应中,探讨了NF键作为有效氧化剂和随后的氮源的双重功能。铜催化被证明可以完全控制区域和化学选择性,这为具有可预测的环大小的氮化杂环开辟了新的合成途径。首次为吡咯烷和哌啶核的构建确定了均匀的催化歧管。通过控制实验和计算研究阐明了这种新的铜氧化催化的各个步骤,阐明了NF功能的奇异性并确定了基于铜(I / II)歧管的催化循环。