| abstract |
[Problem] To provide an acid catalyst which can reduce the quantity of waste in an organic synthesis reaction and which does not corrode a reactor and is nontoxic. [Solution] The problem is resolved by using a bis(trifluoromethanesulfonyl)ethyl-bearing phenolic compound. The compound can be utilized as a catalyst in various organic chemical reactions, particularly in organic synthesis reactions such as Diels-Alder reaction, Friedel-Crafts reaction, Michael addition reaction and esterification reaction. This acid catalyst exhibits higher activity in comparison to a conventional Lewis acid, and therefore need not be used in a stoichiometric amount. Namely, the acid catalyst enables, even when used in an extremely small amount, a desired organic reaction to proceed. Further, the acid catalyst is soluble in various solvents and therefore permits homogeneous reaction, while the acid catalyst can be easily and simply separated from a desired reaction product after the completion of reaction. The acid catalyst is further characterized by making it possible to carry out a reaction at a relatively low temperature near ordinary temperature, thus being highly useful also in an industrial manufacturing process. |