1613321-84-8Relevant articles and documents
Frustrated lewis pair modification by 1,1-Carboboration: Disclosure of a phosphine oxide triggered nitrogen monoxide addition to an intramolecular P/B frustrated lewis pair
Liedtke, René,Scheidt, Felix,Ren, Jinjun,Schirmer, Birgitta,Cardenas, Allan Jay P.,Daniliuc, Constantin G.,Eckert, Hellmut,Warren, Timothy H.,Grimme, Stefan,Kehr, Gerald,Erker, Gerhard
, p. 9014 - 9027 (2014/07/08)
The vicinal frustrated Lewis pair (FLP) mes2P-CH 2CH2-B(C6F5)2 (3) reacts with phenyl(trimethylsilyl)acetylene by 1,1-carboboration to give the extended C3-bridged FLP 6 featuring a substituted vinylborane subunit. The FLP 6 actively cleaves dihydrogen. The FLP 3 also undergoes a 1,1-carboboration reaction with diphenylphosphino(trimethylsilyl)acetylene to give the P/B/P FLP 11 that features a central unsaturated four-membered heterocyclic P/B FLP and a pendant CH2CH2-Pmes2 functional group. Compound 11 reacts with nitric oxide (NO) by oxidation of the pendant Pmes2 unit to the P(O)mes2 phosphine oxide and N,N-addition of the P/B FLP unit to NO to yield the persistent P/B/PO FLPNO aminoxyl radical 14. This reaction is initiated by P(O)mes2 formation and opening of the central Ph2P···B(C6F 5)2 linkage triggered by the pendant CH2CH 2-P(O)mes2 group.
