Copper-catalyzed decarboxylative hydroboration of phenylpropiolic acids under ligand-free or both ligand-and base-free conditions |
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Authors: | Ying-Wei Zhao Qiang Feng Qiu-Ling Song Institute of Next Generation Matter Transformation |
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Affiliation: | Institute of Next Generation Matter Transformation, College of Chemical Engineering, Huaqiao University, Xiamen 361021, China |
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Abstract: | An efficient copper-catalyzed decarboxylative hydroboration of phenylpropiolic acids with bis(pinacolato) diboron was developed, affording β-vinylboronates as the only products in high yields. Extra hydrogen sources such as methanol are not needed in this catalytic system. This reaction could be performed successfully under ligand- and base-free conditions. It demonstrated that phenylpropiolic acids can be employed as alkyne synthons in the hydroboration reaction and exhibited good reactivity and higher selectivity than terminal alkynes. |
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Keywords: | Decarboxylation Hydroboration Ligand-free Base-free Copper-catalysis |
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