Synthesis of Ladder-Type π-Conjugated Heteroacenes via Palladium-Catalyzed Double N-Arylation and Intramolecular O-Arylation
✍ Scribed by Kawaguchi, Keiko; Nakano, Koji; Nozaki, Kyoko
- Book ID
- 120395815
- Publisher
- American Chemical Society
- Year
- 2007
- Tongue
- English
- Weight
- 400 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0022-3263
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1-Aryl-1H-indazoles were synthesized by the palladium-catalyzed intramolecular amination [Pd(OAc) 2 /dppf/tBuONa (150 mol%)/toluene/90°C] of the corresponding N-aryl-N%-(o-bromobenzyl)hydrazines. It was further demonstrated that cyclization of [N-aryl-N%-(o-bromobenzyl)-hydrazinato-N%]-triphenylphos