1 0 0 0 OA Direct arylation polycondensation for the synthesis of bithiophene-based alternating copolymers
- 著者
- Kuwabara Junpei Nohara Yuta Choi Seong Jib Fujinami Yohei Lu Wei Yoshimura Ken Oguma Jun Suenobu Katsuhiro Kanbara Takaki
- 出版者
- The Royal Society of Chemistry
- 雑誌
- Polymer Chemistry (ISSN:17599954)
- 巻号頁・発行日
- vol.4, no.4, pp.947-953, 2013-02
- 被引用文献数
- 106 26
Direct arylation polycondensation reactions using a simple catalytic system gave eight kinds of bithiophene-based alternating copolymers. The conditions for the reactions of 3,3′,4,4′-tetramethylbithiophene with dibromoarylenes were optimized to obtain high-molecular-weight polymers without formation of cross-linked structures. In the reaction of a dibromoarylene containing a reactive C–H bond, a short reaction time (1.5 h) was suitable for preventing side reactions. In contrast, a long reaction time (6 h) gave high-molecular-weight polymers from dibromoarylene monomers without a reactive C–H bond. This polycondensation reaction enables the synthesis of polymers containing dye structures such as diketopyrrolopyrrole and isoindigo, which are applicable as materials for polymer solar cells.
1 0 0 0 OA Synthesis of 4,4′-dinonyl-2,2′-bithiazole-based copolymers via Pd-catalyzed direct C–H arylation
- 著者
- Lu Wei Kuwabara Junpei Kanbara Takaki
- 出版者
- The Royal Society of Chemistry
- 雑誌
- Polymer Chemistry (ISSN:17599954)
- 巻号頁・発行日
- vol.3, no.12, pp.3217-3219, 2012-08
- 被引用文献数
- 61 21
Direct arylation polycondensation of a bithiazole derivative with dibromoarylenes gave the corresponding bithiazole-based copolymers using the phosphine-free catalytic system in a short reaction time.
- 著者
- Taketoshi Ayako Beh Xin Ning Kuwabara Junpei Koizumi Take-aki Kanbara Takaki
- 出版者
- Elsevier Ltd.
- 雑誌
- Tetrahedron letters (ISSN:00404039)
- 巻号頁・発行日
- vol.53, no.28, pp.3573-3576, 2012-07
- 被引用文献数
- 23
The ruthenium(III) complex bearing phenylpyridine as acyclometalated ligand serves as an efficient catalyst for the aerobicoxidativedehydrogenation of benzylalcohols to the corresponding benzaldehydes under mild conditions and for the one-pot synthesis of benzonitriles from benzylalcohols with ammonia.