高分子觸媒를 利用한 Cyclopropanes의 合成 = Synthesis of Cyclopropanes Using Polymer Catalysts

다국어 초록 (Multilingual Abstract)

Polymer catalysts were used in the synthesis of cyclopropane derivatives by the addition reaction of the carbene to appropriate olefins. The synthesis of cyclopropane derivatives has usually been prepared using organic catalysts such as quarternary ammonium salts and quarternary phosphonium salts, but these catalysts have a demerit in the purification of products because of ions present in the catalysts.
Styrene-chlormethyrene-divinylbenzene terpolymer was used as support in this experiment and quarternarized with a tertiary amine. Styrene dissolved in chloroform was added to and aqueous solution of sodium hydroxide contained in an ampoule with polymer catalyst. The mixture was then shaken vigorously and allowed to stand at 25℃ for 48 hours to indicated a 98% yield of the product, 1,1-dichloro-2-phenylcyclopropane.
The insoluble polymer catalyst was easily separated from the product by simple filtration. Thus, the purity of product was highly increased.
The result of this study shows that the polymer catalysts can be reusable and the industrial use of the polymer catalysts is also feasible.