A Borane-Catalyzed Metal-Free Hydrosilylation of Chromones and Flavones

Xiaoyu Ren, Caifang Han, Xiangqing Feng, Haifeng Du*

*Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. of China, Email: haifengduiccas.ac.cn

X. Ren, C. Han, X. Feng, H. Du, Synlett, 2017, 28, 2421-2424.

DOI: 10.1055/s-0036-1588474 (free Supporting Information)

---

see article for more reactions

Abstract

A borane catalyst generated in situ by hydroboration of pentafluorostyrene with HB(C₆F₅)₂ enables a Piers-type hydrosilylation of chromones and flavones to afford a variety of chromanones and flavanones in very good yields.

see article for more examples

---

---

Key Words

hydrosilylation, silanes, chromones, flavones, chromanones, flavanones, borane catalyst, alkene, chiral diyne

---

ID: J60-Y2017