Increasing the Brønsted acidity of Ph2PO2H by the Lewis acid B(C6F5)3. Formation of an eight-membered boraphosphinate ring [Ph2POB(C6F5)2O]2. Issue 73 (18th August 2016)

• Record Type: Journal Article
• Authors: Kather, Ralf; Rychagova, Elena; Sanz Camacho, Paula; Ashbrook, Sharon E.; Woollins, J. Derek; Robben, Lars; Lork, Enno; Ketkov, Sergey; Beckmann, Jens
• Is Part Of: Chemical communications. Volume 52:Issue 73(2016)
• Page Start: 10992
• Page End: 10995
• Publication Date: 2016-08-18
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c6cc06102h
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : The strong acid (C6 F5 )3 BOPPh2 OH, was prepared in situ by the reaction of the rather weak Brønsted acid Ph2 PO2 H with the strong Lewis acid B(C6 F5 )3 . Abstract : Autoprotolysis of the metastable acid (C6 F5 )3 BOPPh2 OH, prepared in situ by the reaction of the rather weak Brønsted acid Ph2 PO2 H with the strong Lewis acid B(C6 F5 )3, gave rise to the formation of the eight-membered ring [Ph2 POB(C6 F5 )2 O]2 and C6 F5 H. The conjugate base was isolated as stable sodium crown ether salt [Na(15-crown-5)][Ph2 PO2 B(C6 F5 )3 ].