Stabilization and Transfer of the Transient [Mes*P₄]⁻ Butterfly Anion Using BPh₃

Abstract

The transient bicyclo[1.1.0]tetraphosphabutane anion, generated from white phosphorus (P 4 )a nd Mes*Li (Mes* = 2,4,6-tBu 3 C 6 H 2 ), can be trapped by BPh 3 in THF.This Lewis acid stabilized anion can be used as an [RP 4 ] À transfer agent, reacting cleanly with neutral Lewis acids (B(C 6 F 5 ) 3 , BH 3 ,a nd W(CO) 5 )t oa ffordu nique singly and doubly coordinated butterfly anions,a nd with the trityl cation to form an eutral, nonsymmetrical, all-carbon-substituted P 4 derivative.T his reaction path enables as imple,s tepwise functionalization of white phosphorus.

Solid frustrated-Lewis-pair catalysts constructed by regulations on surface defects of porous nanorods of CeO2

“…Hydrogen activation by either transition metal complexes or metal-based heterogeneous catalysts have been well developed and successfully applied for various reactions4. Recently, frustrated Lewis pairs (FLPs), Lewis acids and bases that are sterically prevented from interaction to form Lewis acid–base adjuncts, can efficiently and cooperatively activate many small molecules (for example, H 2 , CO 2 , and NO) and even strong C–H bond for important catalytic reactions including hydrogenation, hydroamination and carbon dioxide reduction5678910111213141516171819202122232425.…”