Rhodium- and Iridium-Catalyzed Dehydrogenative Cyclization through Double C鈥揌 Bond Cleavages To Produce Fluorene Derivatives
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- 作者：Masaki Itoh ; Koji Hirano ; Tetsuya Satoh ; Yu Shibata ; Ken Tanaka ; Masahiro Miura
- 刊名：The Journal of Organic Chemistry
- 出版年：2013
- 出版时间：February 15, 2013
- 年：2013
- 卷：78
- 期：4
- 页码：1365-1370
- 全文大小：374K
- 年卷期：v.78,no.4(February 15, 2013)
- ISSN：1520-6904
文摘
The rhodium-catalyzed cyclization of a series of 2,2-diarylalkanoic acids in the presence of copper acetate as an oxidant smoothly proceeded through double C鈥揌 bond cleavages and subsequent decarboxylation to produce the corresponding fluorene derivatives. The direct cyclization of triarylmethanols also took place efficiently by using an iridium catalyst in place of the rhodium, while the hydroxy function was still intact.