Diphosphination of Arynes with Diphosphines
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Published on: April 25, 2014
Yuto Okugawa1, Yoshihiro Hayashi2, Susumu Kawauchi2
1Department of Applied Chemistry, Graduate School of Engineering , Osaka University , Suita, Osaka 565-0871 , Japan.
Abstract:
A diphosphination of arynes with diphosphines has been developed. The reaction of stable aryne precursors, 2-(trimethylsilyl)aryl triflates, with tetraaryldiphosphines proceeds in the presence of fluorine- or carbonate-based activators to deliver the corresponding diphosphinated products, sterically and electronically tuned 1,2-bis(diphenylphosphino)benzene (dppbz) derivatives, which can find wide application in transition metal catalysis and material science. Additionally, preliminary computational studies on the reaction mechanism are also reported.
