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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。
This paper describes the synthesis of a crown ether compound, dicyclohexyl-18-crown-6, and its catalytic activity in the nucleophilic substitution reaction. Synthesis of bicyclohexyldibenzo-18-crown-6 from 3,4-dihydroxycyclohexylbenzene and β, β ’-dichloroethyl ether directly and cyclopropanecarboxylate as a catalyst for the synthesis of n-C8H17Br Phase transfer catalysis was carried out with nucleophilic substitution reaction with KI and (C6H5OH + KOH). The results showed that the catalytic efficiency of dicyclohexyl-dibenzo-18-crown-6 was better than that of dibenzo-18-crown in the nucleophilic substitution of n-C8H17, Br and KI and (C6H5OH + KOH) 6. It was confirmed: in the nucleophilic substitution reaction, dicyclohexyl dibenzo-18 ─ crown ─ 6 there. Good catalytic activity.