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- Title
Palladium Immobilized on Thiol-Modified Silica Gel for Effective Direct C−H Arylation.
- Authors
Hayashi, Shotaro; Takigami, Atsushi; Koizumi, Toshio
- Abstract
A palladium catalyst immobilized on thiol-modified silica gel (PITS) was developed for the efficient synthesis of various π-conjugated oligomers and polymers. Direct arylation of 3,4-ethylenedioxythiophene (EDOT) gave not only the corresponding oligomeric compounds in high yields but also high-molecular-weight π-conjugated polymers in high yields. Moreover, the polycondensation of the β-unprotected bithiophene monomer with dibromoarenes was also achieved. This solid-supported Pd catalyst was used to conduct regioselective direct arylation polycondensation, giving high-molecular-weight π-conjugated polymers in high purity (low levels of residual Pd impurities and structural β-defects).
- Subjects
PALLADIUM; SILICA gel; THIOL synthesis; ARYLATION; DRYING agents
- Publication
ChemPlusChem, 2016, Vol 81, Issue 9, p930
- ISSN
2192-6506
- Publication type
Article
- DOI
10.1002/cplu.201600188