Structure and reactivity studies of the aluminum analogue of Piers' borane [HAl(C6F5)2]3. Issue 3 (9th December 2022)

• Record Type: Journal Article
• Authors: Tan, Jingjie; Hu, Chaopeng; Yang, Xin; Ju, Shaoying; Cao, Levy L.; Wu, Yile; Liu, Liu Leo; Stephan, Douglas W.
• Is Part Of: Chemical communications. Volume 59:Issue 3(2023)
• Page Start: 282
• Page End: 285
• Publication Date: 2022-12-09
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d2cc06075b
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : The aluminum analogue of Piers' borane, [HAl(C6 F5 )2 ]3, is prepared on a gram-scale and shown to be highly acidic, a strong hydride donor, and a catalysts for the hydrosilylation of alkynes and alkenes. Abstract : The aluminum analogue of Piers' borane, [HAl(C6 F5 )2 ]3 1, is prepared on a gram-scale. Density functional theory (DFT) calculations reveal 1 has a higher fluoride ion affinity (FIA) than Piers' borane, while the Al–H moiety proved to be a strong hydride donor, reacting with alcohol and terminal alkyne to give the corresponding dehydrogenative products 3 and 4 . Hydroalumination product 5 was prepared via reaction of 1 with aldehyde. In addition, 1 catalyzes the hydrosilylation of alkynes and alkenes.