Modular Access to 9,9-Spirobifluorenes by Oxidative Coupling Using Molybdenum Pentachloride
摘要:
The strong oxidizing agent molybdenum pentachloride was used for an efficient direct C-C bond formation of 9,9-diarylfluorenes to the corresponding 9,9-spirobifluorenes. Thus, a versatile method that is compatible with labile groups, such as iodo moieties, was established. By this approach important building blocks for light emitting polymers were synthesized in high yields.
Modular Access to 9,9-Spirobifluorenes by Oxidative Coupling Using Molybdenum Pentachloride
摘要:
The strong oxidizing agent molybdenum pentachloride was used for an efficient direct C-C bond formation of 9,9-diarylfluorenes to the corresponding 9,9-spirobifluorenes. Thus, a versatile method that is compatible with labile groups, such as iodo moieties, was established. By this approach important building blocks for light emitting polymers were synthesized in high yields.
Initial Radical Cation Pathway in the Mo<sub>2</sub>Cl<sub>10</sub>-Mediated Dehydrogenative Arene Coupling
作者:Jana Leppin、Moritz Schubert、Siegfried R. Waldvogel、Katja Heinze
DOI:10.1002/chem.201406522
日期:2015.3.9
Experimental (EPR) and theoretical (DFT) evidence is provided for radicalcation formation as initial step in the Mo2Cl10‐mediated dehydrogenativearenecoupling. The initial electron transfer from methoxyarenes to molybdenum proceeds via an inner sphere mechanism.