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)
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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.
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