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

Ralf Kather, Elena Rychagova, Paula Sanz Camacho, Sharon E. Ashbrook, J. Derek Woollins, Lars Robben, Enno Lork, Sergey Ketkov*, Jens Beckmann*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Autoprotolysis of the metastable acid (C6F5)3BOPPh2OH, prepared in situ by the reaction of the rather weak Brønsted acid Ph2PO2H with the strong Lewis acid B(C6F5)3, gave rise to the formation of the eight-membered ring [Ph2POB(C6F5)2O]2 and C6F5H. The conjugate base was isolated as stable sodium crown ether salt [Na(15-crown-5)][Ph2PO2B(C6F5)3].

Original languageEnglish
Pages (from-to)10992-10995
Number of pages4
JournalChemical Communications
Volume52
Issue number73
Early online date5 Aug 2016
DOIs
Publication statusPublished - 21 Sept 2016

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