| Autor: |
A´ngeles Herranz, M., Rivera, Jose´ A., Alvarado, Robert J., Martı´n, Nazario, Thilgen, Carlo, Diederich, Franc¸ois, Echegoyen, Luis |
| Zdroj: |
Journal of Supramolecular Chemistry; July 2001, Vol. 1 Issue: 4-6 p299-303, 5p |
| Abstrakt: |
Bulk electrolytic reduction efficiently removes certain methano addends from cyclopropanefullerenes. This retro-cyclopropanation reaction also takes place under chemical conditions by reaction with amalgamated magnesium in dry THF. The introduction of 18-crown-6 (18C6) results in considerably improved yields and in more reproducible results. For the cyclophane-type trans-1 fullerene-dibenzocrown-6 conjugate (7) the retro-cyclopropanation reaction occurs efficiently when performed electrochemically and not at all when performed chemically. The electrochemical reaction is influenced by the presence of binding metal ions, which tend to stabilize the original compound after multiple electron reductions. These chemical reactions could be scaled-up to avoid the use of highly toxic HgBr2 to activate the magnesium. |
| Databáze: |
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| Externí odkaz: |
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