The reactions of polyfluoroaryl bromides ArFBr or iodides ArFI with P(NR′2)3 and R3MX (R = alkyl; M = Si, Ge, Sn, and Pb; X = Cl, Br) led to the formation of ArFMR3. The reactions of C6F5Br with P(Net2)3 and C-electrophiles (CH3I, C6F5CF3 and (CF3)2C=CFC2F5) gave the products of pentafluorophenylation of these substrates.
polyfluoroaryl的反应溴化物的Ar ˚F Br或碘化物的Ar ˚F我与P(NR' 2)3和R 3 MX(R =烷基; M =硅,锗,锡,和铅; X =氯,溴)导致了Ar F MR 3的形成。C 6 F 5 Br与P(Net 2)3和C-亲电试剂(CH 3 I,C 6 F 5 CF 3和(CF 3)2 C = CFC 2 F 5)的反应产生了五氟苯基化产物基材。
Synthesis of hydrosilanes <i>via</i> Lewis-base-catalysed reduction of alkoxy silanes with NaBH<sub>4</sub>
Hydrosilanes were synthesized by reduction of alkoxy silanes with BH3 in the presence of hexamethylphosphoric triamide (HMPA) as a Lewis-base catalyst. The reaction was also achieved using an inexpensive and easily handled hydride source NaBH4, which reacted with EtBr as a sacrificial reagent to form BH3in situ.