2,9,16,19,22,25-Hexaoxatetracyclo[24.4.0.24,7.010,15]dotriaconta-1(26),4,6,10(15),11,13,27,29,31-nonaene
نویسندگان
چکیده
The title 22-crown-6 unit, C(26)H(28)O(6), comprising of three benzo groups and triethyl-ene glycol, was prepared by the reaction of α,α'-dibromo-p-xylene with 1,8-bis-(2-hydroxy-phen-oxy)-3,6-dioxaoctane in the presence of Cs(2)CO(3) with tetra-hydro-furan (THF) and recrystallized from dichloro-methane-hexane (1:20 v/v) at room temperature. In the mol-ecular structure, two O atoms of the central ethyl-ene glycol in the triethyl-ene glycol unit exhibit exo conformations due to intra-molecular C-H⋯O inter-actions. A number of C-H⋯O and C-H⋯π inter-molecular inter-actions contribute to the stabilization of the crystal packing.
منابع مشابه
6,7-Bis(bromomethyl)-2,11,18,21,24,27-hexaoxatetracyclo[26.4.0.04,9.012,17]dotriaconta-1(28),4,6,8,12(17),13,15,29,31-nonaene dichloromethane monosolvate
The title 20-crown-6 unit, C(28)H(30)Br(2)O(6)·CH(2)Cl(2), consisting of three benzo groups and triethyl-ene glycol was prepared from the reaction of 1,2,4,5-tetra-kis-(bromo-meth-yl)benzene and bis-phenol in the presence of sodium hydride. In the crystal, one O atom of the central ethyl-ene glycol in the triethyl-ene glycol unit exhibits an exo conformation as a result of intra-molecular C-H⋯O...
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