Magnesium‐Catalyzed Tandem Dehydrogenation‐Dehydrocoupling: An Atom Economical Access to Alkynylboranes. Issue 15 (5th March 2020)

• Record Type: Journal Article
• Authors: Birepinte, Mélodie; Liautard, Virginie; Chabaud, Laurent; Pucheault, Mathieu
• Is Part Of: Chemistry. Volume 26:Issue 15(2020)
• Page Start: 3236
• Page End: 3240
• Publication Date: 2020-03-05
• Subjects: alkynylboranes -- aminoboranes -- dehydrocoupling -- dehydrogenation -- magnesium; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201905772
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Owing to the unusual reactivity of sterically hindered amine–borane complexes, a catalytic system based on magnesium salts was designed to perform a tandem dehydrogenation–dehydrocoupling between terminal alkynes and boranes. The reaction is providing pure alkynylboranes within few minutes at room temperature, with only two molecules of hydrogen as a byproduct. Abstract : A tandem made for two : An efficient synthesis of alkynylaminoborane was developed using a magnesium catalyst at room temperature. The reaction proceeds within few minutes in high yields releasing hydrogen through a tandem dehydrogenation/dehydrocoupling original mechanism between terminal alkynes and boranes.