Zwitterionic Phosphirenium Borates Derived from Bis(alkynyl)mesityl Phosphanes and Tris(pentafluorophenyl)borane
ABSTRACT From a series of bis(alkynyl)mesityl phosphanes 5, we prepared phosphirenium borate compounds 6 in high yields by reaction with B(C6F5)3 at room temperature. The zwitterionic compounds 6 are conveniently accessible and can be obtained with unique substitution patterns by this route. For two...
Gespeichert in:
Veröffentlicht in: | Heteroatom chemistry 2014-11, Vol.25 (5), p.396-401 |
---|---|
Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | ABSTRACT
From a series of bis(alkynyl)mesityl phosphanes 5, we prepared phosphirenium borate compounds 6 in high yields by reaction with B(C6F5)3 at room temperature. The zwitterionic compounds 6 are conveniently accessible and can be obtained with unique substitution patterns by this route. For two examples, we show the conversion of 6 to the respective 3‐borylated phosphole derivatives 7 through multiple 1,1‐carboboration reactions. In a useful one‐pot methodology, the phosphirenium borates 6 are converted to air‐stable 3‐arylated phospholes 8 by a sequential 1,1‐carboboration/ Suzuki–Miyaura type cross‐coupling reaction. |
---|---|
ISSN: | 1042-7163 1098-1071 |
DOI: | 10.1002/hc.21184 |