Frustrated Lewis Pair Chemistry Derived from Bulky Allenyl and Propargyl Phosphanes
作者:Christoph Rosorius、Jennifer Möricke、Birgit Wibbeling、Alison C. McQuilken、Timothy H. Warren、Constantin G. Daniliuc、Gerald Kehr、Gerhard Erker
DOI:10.1002/chem.201502493
日期:2016.1.18
underwent rapid phosphane/borane (P/B) frustrated Lewis pair (FLP) reactions under mild conditions. Compound 2 c reacted with nitric oxide (NO) to give the persistent FLP NO radical 11. The systems 2 b,c cleaved dihydrogen at room temperature to give the respective phosphonium/hydridoborate products 13 b,c. Compound 13 c transferred the H+/H− pair to a small series of enamines. Compound 13 c was also
二烯丙基炔丙基膦mes 2 P-CH 2 -C≡C-R6 a(R = H),6 b(R = CH 3),6 c(R = SiMe 3)和烯丙基mes 2 P-C(CH 3)= C = CH 2(8)与Piers'硼烷HB(C 6 F 5)2反应。化合物6,得到MES 2 PCH 2 CH = CH(B(C 6 ˚F 5)2 ](9),与此相对,添加HB(C的6 ˚F 5)2至图6b和6c中,得到的混合物9b中(R = CH 3)和9c的(R =森达3与位置异构体MES)2 P-CH 2 -C [B(C 6 ˚F 5)2 ] = CRH 2b(R = CH 3)和2c(R = SiMe 3)。在温和条件下,化合物2b,c经历了快速的膦/硼烷(P / B)挫败的Lewis对(FLP)反应。化合物2 c与一氧化氮(NO)反应,得到持久的FLP NO自由基11。系统2b,c在室温下裂解二氢,得到相应的phospho