Iron-Catalyzed Dehydrogenative Borylation of Terminal Alkynes

Abstract : The catalytic system based on Fe(OTf)(2) (2.5 mol%) and DABCO (1 mol%) selectively promotes the dehydrogenative borylation of both aromatic and aliphatic terminal alkynes to afford alkynylboronate derivatives in the presence of 1 equiv. of pinacolborane at 100 degrees C in toluene. This methodology is applicable to a variety of terminal alkynes (16 examples, yield 62-93%).
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Duo Wei, Bertrand Carboni, Jean-Baptiste Sortais, Christophe Darcel. Iron-Catalyzed Dehydrogenative Borylation of Terminal Alkynes. Advanced Synthesis and Catalysis, Wiley-VCH Verlag, 2018, 360 (19), pp.3649-3654. ⟨10.1002/adsc.201800588⟩. ⟨hal-01902040⟩

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