Hafnium (IV) Trifluoromethanesulfonate, An Efficient Catalyst for the Friedel-Crafts Acylation and Alkylation Reactions.

I Hachiya, M Moriwaki, S Kobayashi

文献索引：Hachiya, Iwao; Moriwaki, Mitsuhiro; Kobayashi, Shu Bulletin of the Chemical Society of Japan, 1995 , vol. 68, # 7 p. 2053 - 2060

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被引用次数: 100

摘要

Hafnium (IV) trifluoromethanesulfonate (hafnium (IV) triflate, Hf (OTf) 4) was synthesized from hafnium tetrachloride and trifluoromethanesulfonic acid. The triflate thus prepared was found to be effective in the catalytic Friedel–Crafts acylation reactions of various substituted benzenes with acid anhydrides in lithium perchlorate–nitromethane (LiClO 4–MeNO 2). Lithium perchlorate–nitromethane is an excellent solvent system, and the catalytic activity ...