Stereoselective CH Borylations of Cyclopropanes and Cyclobutanes with Silica‐Supported Monophosphane–Ir Catalysts |
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| Authors: | Ryo Murakami Kiyoshi Tsunoda Dr. Tomohiro Iwai Prof. Dr. Masaya Sawamura |
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| Affiliation: | Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060‐0810 (Japan) |
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| Abstract: | Heteroatom‐directed C?H borylation of cyclopropanes and cyclobutanes was achieved with silica‐supported monophosphane–Ir catalysts. Borylation occurred at the C?H bonds located γ to the directing N or O atoms with exceptional cis stereoselectivity relative to the directing groups. This protocol was applied to the borylation of a tertiary C?H bond of a ring‐fused cyclopropane. |
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| Keywords: | borylation C H activation cyclobutanes cyclopropanes iridium catalysts |
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