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Trimethylsilyl Pentafluorophenylbis(trifluoromethanesulfonyl)methide as a Super Lewis Acid Catalyst for the Condensation of Trimethylhydroquinone with Isophytol

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  • This work was supported by SORST, Japan Science and Technology Agency (JST), the 21st Century COE Program “Nature-Guided Materials Processing” of the Ministry of Education, Culture, Sports, Science and Technology, the Izumi Science and Technology Foundation, the Mazda Foundation's Research Grant, and the Noguchi Fluorous Project of the Noguchi Institute.

Abstract

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Säure und Vitamin E: Trimethylsilyl-Super-Lewis-Säuren wie [C6F5[BOND]C(Tf)2] Me3Si+ sind sehr aktive und effektive Katalysatoren für die regioselektive Kondensation von Trimethylhydrochinon mit Isophthyol zur Herstellung von (±)-α-Tocopherol (Vitamin E; siehe Schema, Tf=CF3SO2).

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