474377-89-4Relevant academic research and scientific papers
A convenient cyanide-free one-pot synthesis of nido-Me3N-7-CB10H12 and nido-7-CB10H13-
Batsanov, Andrei S.,Fox, Mark A.,Goeta, Andres E.,Howard, Judith A. K.,Hughes, Andrew K.,Malget, John M.
, p. 2624 - 2631 (2002)
Reaction of nido-tBuH2N-7-CB10H12 with Na2CO3 and (MeO)2SO2 in THF results in mono-methylation to give nido-tBuMeHN-7-CB10H12, whilst prolonged reaction at elevated temperatures results in a quantitative yield of the trimethyl derivative nido-Me3N-7-CB10H12, as a result of metathesis of the tert-butyl group. The 11B NMR spectrum of nido-tBuMeHN-7-CB10H12 is explored as a function of pH, demonstrating exchange with nido-tBuMeN-7-CB10H12-. Reaction of B10H14 with CyNC gives nido-CyH2N-7-CB10H12, which is methylated by Na2CO3 and (MeO)2SO2 in THF to give nido-CyMe2N-7-CB10H12. Deprotonation of nido-Me3N-7-CB10H12 and nido-CyMe2N-7-CB10H12 yields Na[nido-Me3N-7-CB10H11] and Na[nido-CyMe2N-7-CB10H11] respectively. Both trialkyl(amino)carboranes can be converted to Na[nido-CB10H13], itself a precursor to the poorly coordinating anion closo-CB11H12-. The molecular structures of nido-tBuMeHN-7-CB10H12 and nido-CyMe2N-7-CB10H12, determined by single crystal X-ray diffraction, are reported.
