Abstract
Treatment of arachno-4-CB8H14 with sulfur and triethylamine in chloroform has produced the new tenvertex carbathiaborane arachno-6,9-CSB8H12, which has been used for the preparation of a series of further carbathiaborane compounds. Deprotonation with sodium hydride or 1,8-bis(dimethylamino)-naphthalene generates the [arachno-6,9-CSB8H11]– anion. Thermolysis of the sodium salt of this anion, followed by acidification, results in comproportionation to give nido-7,9-CSB9H11 and arachno-4,6-CSB7H11. Alternatively, oxidation by acetone yields the [nido-6,9-CSB8H9]– anion. Degradation of this latter anion with concentrated hydrochloric acid leads to arachno-4,6-CSB7H11. Deprotonation of this neutral carbathiaborane with sodium hydride in ether, followed by degradation by aqueous acetone of the [arachno-4,6-CSB7H10]– anion generated in situ, gives the [hypho-7,8-CSB6H11]– anion. This has been methylated by methyl iodide to afford neutral 8-Me-hypho-7,8-CSB6H11. The unambiguous cluster constitutions of all compounds isolated have been established by 1H and 11B NMR spectroscopy and mass spectrometry.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.