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Homo- and heterodehydrocoupling of phosphines mediated by alkali metal catalysts.
Nature Communications ( IF 14.7 ) Pub Date : 2019-06-26 , DOI: 10.1038/s41467-019-09832-4
Lipeng Wu 1, 2 , Vincent T Annibale 1 , Haijun Jiao 3 , Adam Brookfield 4 , David Collison 4 , Ian Manners 1, 5
Affiliation  

Catalytic chemistry that involves the activation and transformation of main group substrates is relatively undeveloped and current examples are generally mediated by expensive transition metal species. Herein, we describe the use of inexpensive and readily available tBuOK as a catalyst for P–P and P–E (E = O, S, or N) bond formation. Catalytic quantities of tBuOK in the presence of imine, azobenzene hydrogen acceptors, or a stoichiometric amount of tBuOK with hydrazobenzene, allow efficient homodehydrocoupling of phosphines under mild conditions (e.g. 25 °C and < 5 min). Further studies demonstrate that the hydrogen acceptors play an intimate mechanistic role. We also show that our tBuOK catalysed methodology is general for the heterodehydrocoupling of phosphines with alcohols, thiols and amines to generate a range of potentially useful products containing P–O, P–S, or P–N bonds.



中文翻译:

碱金属催化剂介导的膦的均氢和杂脱氢偶联。

涉及主族底物的活化和转化的催化化学是相对较不发达的,目前的例子通常是由昂贵的过渡金属物质介导的。在本文中,我们描述了使用廉价且易于获得的t BuOK作为P-P和P-E(E = O,S或N)键形成的催化剂的用途。在亚胺,偶氮苯氢受体存在下催化量的t BuOK,或化学计量的t BuOK与苯的催化量,可在温和条件下(例如25°C和<5分钟)有效地使膦进行均脱氢偶联。进一步的研究表明,氢受体起着密切的机械作用。我们还表明,我们的牛逼BuOK催化的方法学通常用于将膦与醇,硫醇和胺进行异脱氢偶联,以生成一系列可能有用的含有P–O,PS–或N–N键的产物。

更新日期:2019-06-26
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