Zinc-Catalysed Hydroboration of Terminal and Internal Alkynes.,Chemistry - An Asian Journal

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Zinc-Catalysed Hydroboration of Terminal and Internal Alkynes.
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2019-08-07 , DOI: 10.1002/asia.201900839
Souvik Mandal ₁ , Sayantan Mandal ₁ , K Geetharani ₁

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A regioselective hydroboration of alkynes has been developed by using commercially available zinc triflate as a catalyst, in the presence of catalytic amount of NaBHEt3 . The reaction tolerates a wide range of terminal alkynes having several synthetically useful functional groups and proceeds regioselectively to furnish hydroborated products in moderate to excellent yields. This system shows moderate chemoselectivity towards terminal C≡C bond over terminal and internal C=C bond and internal C≡C bond.

中文翻译：

锌催化的末端炔烃和内部炔烃的硼氢化反应。

在催化量的NaBHEt3存在下，通过使用可商购的三氟甲磺酸锌作为催化剂，开发了炔烃的区域选择性硼氢化。该反应可耐受具有几个合成上有用的官能团的各种末端炔烃，并选择性地进行反应，以中等至极好的收率提供氢硼化产物。该系统显示出对在末端和内部C ＝ C键和内部C ＝ C键上的末端C ＝ C键的中等化学选择性。

更新日期：2019-08-07

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