Generation of bis(pentafluorophenyl)borane-dimethyl sulfide complex as a solution of hexane and its application to hydroboration of alk-1-yne with pinacolborane |
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| Authors: | Masayuki Hoshi Kazuya Shirakawa Mitsuhiro Okimoto |
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| Affiliation: | Department of Applied and Environmental Chemistry, Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido 090-8507, Japan |
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| Abstract: | A solution of bis(pentafluorophenyl)borane-dimethyl sulfide complex in hexane was generated by redistribution between tris(pentafluorophenyl)borane and borane-dimethyl sulfide complex. In the resulting solution a stoichiometric hydroboration of alk-1-yne with pinacolborane proceeded well at room temperature to afford (E)-alk-1-enylboronic acid pinacol ester in high yield. Bis(pentafluorophenyl)borane-dimethyl sulfide complex served as a mediator for the hydroboration. |
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| Keywords: | Bis(pentafluorophenyl)borane-dimethyl sulfide complex Tris(pentafluorophenyl)borane Borane-dimethyl sulfide complex Hydroboration Pinacolborane |
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