【摘要】 本文叙述一种冠醚化合物二环已基二苯并─１８─冠─６的合成，研究它在亲核取代反应中的催化活性。由３，４一二羟基环己基苯与β，β＇一二氯乙醚直接关环合成二环已基二苯并─１８─冠─６，将这种冠醚化合物作为催化剂，对ｎ－Ｃ８Ｈ１７Ｂｒ与ＫＩ及（Ｃ６Ｈ５ＯＨ＋ＫＯＨ）的亲核取代反应进行了相转移催化试验。结果表明，在ｎ－Ｃ８Ｈ１７，Ｂｒ与ＫＩ及（Ｃ６Ｈ５ＯＨ＋ＫＯＨ）的亲核取代反应中，二环已基二苯并─１８─冠─６的催化效率优于二苯并─１８─冠。６。由此证实：在亲核取代反应中，二环己基二苯并─１８─冠─６有．良好的催化活性。更多还原

【Abstract】 0his paper describes the synthesis of crown ethers compounds dicyclohexyl─dibenzo─18─crown─6, and the investigation of its catalytic activity in nuclopilicreactions. Dicyclohexyl ─dibenzo─18─ crown─6 has been synthetiezed from 3,4─dihydroxy─cyclohexyl benzene and P, β─dichloro ethyl ether by cyclization. Thiscrown ether compounds has been used as a catalysts and investigation of itsphase─transfer catalytic experimental in the substitution reaCtion of n─C8H17Br withKI, (C6H5OH+KOH). The results of substitution reaction of n─C8H17Br with KI,(C6H5OH +KOH) shown that the dicycloheyl─dibenzo─18─ crown─6 does have superior catalytic efficiency over the dibenzo─18─crown─6. The present experimental findings demonetrate evidently the dicycloheyl─dibenzo ─ 18─ crown─6 there are morecatalytic activity in phase─transfer catalytic reaction.更多还原