Catalytic dehydrogenative diboration (DHDB) of alkyne with HBpin was achieved using [Ir(COD)Cl]₂ and other related Ir precursors under CO atmosphere. The selectivity for DHDB over hydroboration was higher in less polar solvents and under higher CO pressure. It was further improved when catalytic amount of ^tBuNC was added to the reaction. It was possible to achieve DHDB of both terminal and internal alkynes with selectivity for DHDB of up to 9:1 under the best conditions. Some DHDB products were isolated on the preparative scale.

中文翻译：

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Ir / CO / ^t BuNC体系催化炔烃脱氢硼氢化反应

在CO气氛下，使用[Ir（COD）Cl] ₂和其他相关的Ir前体，实现了HBpin炔烃的催化脱氢硼氢化（DHDB）。在极性较小的溶剂中和较高的CO压力下，DHDB在硼氢化反应中的选择性较高。当将催化量的^t BuNC加入反应中时，其进一步改善。在最佳条件下，对末端和内部炔烃的DHDB选择性可达9：1。某些DHDB产品已按制备规模分离。