We demonstrate pyridine hydroboration catalyzed by a diazaphospholene hydride precatalyst. Pyridines bearing electron-withdrawing groups in the 3-position are hydroborated efficiently. This system features low catalyst loadings, fast reaction times at ambient temperature, and tolerance of other reducible functionality. Off-cycle products of pyridine hydrophosphination were also obtained in one case from a stoichiometric reaction and structurally characterized.

中文翻译：

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用重氮磷腈预催化剂进行吡啶硼氢化

我们展示了由二氮杂磷氢化物预催化剂催化的吡啶硼氢化。在3-位带有吸电子基团的吡啶被有效硼氢化。该系统的特点是催化剂用量低，在环境温度下反应时间短以及对其他可还原功能的耐受性。在一种情况下，还从化学计量反应中获得了吡啶加氢磷酸化的脱环产物，并进行了结构表征。