A Unique Frustrated Lewis Pair Pathway to Remarkably Stable Borata–Alkene Systems. Issue 19 (5th June 2013)

• Record Type: Journal Article
• Authors: Yu, Jiangang; Kehr, Gerald; Daniliuc, Constantin G.; Erker, Gerhard
• Is Part Of: European journal of inorganic chemistry. Issue 19(2013)
• Page Start: 3312
• Page End: 3315
• Publication Date: 2013-06-05
• Subjects: Borata–alkenes -- Lewis acids -- Lewis bases -- Boron -- Phosphorus; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201300520
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract: The hydroboration of a conjugated diphenylphosphanylenyne with Piers' borane [HB(C6 F5 )2 ] gives three products. The major product is probably formed by generation of a geminal P/B frustrated Lewis pair that undergoes rapid and subsequent intramolecular conjugate addition of the phosphane to the dienyl borane unit to yield a unique phosphonium borata–diene. The minor products originate from alternative regioisomeric hydroboration reactions. Two examples of the new phosphonium borata–olefin products were characterized by X‐ray diffraction. Abstract : The hydroboration of a diphenylphosphanylenyne with Piers' borane at elevated temperature gives a zwitterionic borata–alkene. This unique reaction yields borata–alkenes without the need of α‐boryl deprotonation.