Aluminium complex-catalysed hydroboration of alkenes and alkynes. (18th June 2019)

• Record Type: Journal Article
• Authors: Harinath, Adimulam; Banerjee, Indrani; Bhattacharjee, Jayeeta; Panda, Tarun K.
• Is Part Of: New journal of chemistry. Volume 43:Number 26(2019)
• Page Start: 10531
• Page End: 10536
• Publication Date: 2019-06-18
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c9nj01859j
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Catalytic hydroboration of terminal alkenes/alkynes with HBpin using the Al(III) catalyst, [κ 2 -{Ph2 P(=Se)NCH2 (C5 H4 N)}Al(CH3 )2 ] (1 ), under mild and solvent-free conditions to afford corresponding alkyl/alkenyl boronate esters in high yield is reported. Abstract : We demonstrate an efficient method for the hydroboration of terminal alkenes or alkynes with pinacolborane (HBpin) using the aluminium catalyst, [κ 2 -{Ph2 P(=Se)NCH2 (C5 H4 N)}Al(CH3 )2 ] (1 ), supported by a functionalized amidophosphine ligand under mild and solvent-free conditions to afford the corresponding alkyl and alkenyl boronate esters in high yield. This protocol involves the chemoselective formation of an anti-Markovnikov product exclusively. Both terminal alkenes and alkynes bearing a wide array of electron-withdrawing and donating functional groups can easily be converted to the corresponding product through the formation of aluminum hydride as an active catalytic species.