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2,9,16,19,22,25-Hexaoxatetra-cyclo-[24.4.0.2.0]dotriaconta-1(26),4,6,10(15),11,13,27,29,31-nona-ene.

ABSTRACT: 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 ?,?'-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?? inter-molecular inter-actions contribute to the stabilization of the crystal packing.

SUBMITTER: Lee JY

PROVIDER: S-EPMC2970268 | biostudies-literature | 2009 Sep

REPOSITORIES: biostudies-literature

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2,9,16,19,22,25-Hexaoxatetra-cyclo-[24.4.0.2.0]dotriaconta-1(26),4,6,10(15),11,13,27,29,31-nona-ene.

Lee Jai Young JY Lee Ji-Eun JE Sim Wonbo W Park Ki-Min KM

Acta crystallographica. Section E, Structure reports online 20090909 Pt 10

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- ...[more]

PMID: 21577835

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