Generation of Diarylcarbenium Ion Pools via Electrochemical C–H Bond Dissociation
作者:Masayuki Okajima、Kazuya Soga、Takashi Watanabe、Kimitada Terao、Toshiki Nokami、Seiji Suga、Jun-ichi Yoshida
DOI:10.1246/bcsj.82.594
日期:2009.5.15
The “cation pools” of diarylcarbenium ions have been generated by the low-temperature electrochemical oxidation of diphenylmethane derivatives. In addition to diphenylmethanes having various substituents, 9,10-dihydroanthracene, dibenzosuberane, and xanthenes, which are annulated derivatives of diphenylmethane were also found to serve as a precursor of cation pools. The generation of the diarylcarbenium ion was confirmed by low-temperature NMR analysis and cold-spray mass analysis. Reactivity was also investigated by reactions with various carbon nucleophiles such as allyltrimethylsilane, 1,3,5-trimethylbenzene, and anisole.
Efficient and Mild Iron-Catalyzed Direct Allylation of Benzyl Alcohols and Benzyl Halides with Allyltrimethylsilane
作者:Jie Han、Zili Cui、Jianguo Wang、Zhongquan Liu
DOI:10.1080/00397910903219393
日期:2010.6.25
An efficient and mild iron-catalyzed direct allylation of benzylalcohols and benzyl halides with allyltrimethylsilane has been developed. The present reaction would provide an excellent alternative to published methods because of its excellent yields, sustainable catalyst, and mild conditions.