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首页> 外文期刊>Bulletin of the Chemical Society of Japan >Rhodium- and Ruthenium-Catalyzed Dehydrogenative Borylation of Vinylarenes with Pinacolborane: Stereoselective Synthesis of Vinylboronates
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Rhodium- and Ruthenium-Catalyzed Dehydrogenative Borylation of Vinylarenes with Pinacolborane: Stereoselective Synthesis of Vinylboronates

机译:品尼高硼烷的铑和钌催化的乙烯基芳烃脱氢硼化反应:乙烯基硼酸酯的立体选择性合成

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摘要

The treatment of pinacolborane (4,4,5,5-tetramethyl-1,3,2-dioxaborolane) with vinylarenes in the presence of a catalytic amount of phosphine-free di-mu-chlorobis (1,5-cyclooctadiene) dirhodium (I) [RhCl(cod)]_2, through dehydrogenation borylation, provides the corresponding regio- and stereodefine (E)-2-arylethenylboronates in high yields. Also, a ruthenium complex prepared in situ from (1,5-cyclooctadiene) (1,3,5-cyclooctatriene) ruthenium (0) [Ru(cod)(cot)] and P(4-CF_3C_6H_4)_3 showed considerable catalytic activity for dehydrogenative borylation.
机译:在催化量的无膦二μ-氯双(1,5-环辛二烯)二甲基吡啶鎓存在下,用乙烯基芳烃处理频哪醇硼烷(4,4,5,5-四甲基-1,3,2-二氧杂硼烷)( I)[RhCl(cod)] _ 2,通过脱氢硼化,以高收率提供相应的区域和立体定义(E)-2-芳基乙烯基硼酸酯。另外,由(1,5-环辛二烯)(1,3,5-环辛三烯)钌(0)[Ru(cod)(cot)]和P(4-CF_3C_6H_4)_3原位制备的钌络合物显示出相当大的催化活性。用于脱氢硼化。

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