Iron-Catalyzed Tunable and Site-Selective Olefin Transposition,Journal of the American Chemical Society

当前位置： X-MOL 学术 › J. Am. Chem. Soc. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Iron-Catalyzed Tunable and Site-Selective Olefin Transposition
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-09-29 , DOI: 10.1021/jacs.0c08631
Xiaolong Yu ₁ , Haonan Zhao ₁ , Ping Li ₁ , Ming Joo Koh ₁

Affiliation

The catalytic isomerization of C-C double bonds is an indispensable chemical transformation used to deliver higher-value analogues and has important utility in the chemical industry. Notwithstanding the advances reported in this field, there is compelling demand for a general catalytic solution that enables precise control of the C=C bond migration position, in both cyclic and acyclic systems, to furnish disubstituted and trisubstituted alkenes. Here, we show that catalytic amounts of an appropriate earth-abundant iron-based complex, a base and a boryl compound promote efficient and controllable alkene transposition. Mechanistic investigations reveal that these processes likely involve in situ formation of an iron-hydride species which promotes olefin isomerization through sequential olefin insertion/β-hydride elimination. Through this strategy, regiodivergent access to different products from one substrate can be facilitated, isomeric olefin mixtures commonly found in petroleum-derived feedstock can be transformed to a single alkene product, and unsaturated moieties embedded within linear and heterocyclic biologically active entities can be obtained.

中文翻译：

铁催化的可调和位点选择性烯烃转位

CC 双键的催化异构化是必不可少的化学转化，用于提供更高价值的类似物，在化学工业中具有重要用途。尽管在该领域取得了进展，但仍然迫切需要一种通用催化解决方案，能够精确控制环状和非环状体系中的 C=C 键迁移位置，以提供二取代和三取代烯烃。在这里，我们展示了催化量的合适的地球丰富的铁基络合物、碱和硼基化合物促进有效和可控的烯烃转位。机理研究表明，这些过程可能涉及原位形成铁氢化物物种，该物种通过顺序烯烃插入/β-氢化物消除促进烯烃异构化。通过这个策略，

更新日期：2020-09-29

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11