| 摘要 |
1,211,777. Cyclic polyethers. E.I. DU PONT DE NEMOURS & CO. 26 Jan., 1968 [9 Feb., 1967], No. 4282/68. Heading C2C. [Also in Divisions B2 and C3] The preparation of various macrocyclic polyethers is described. In Example 1, 2,5,8,15, 18,21 - hexaoxatricyclo [20, 4.0.0<SP>9,14</SP>] - hexacosane is prepared by treating bis-[2-(o-hydroxyphenoxy) ethyl] ether with water, nbutanol, sodium hydroxide and bis-#-chloroethyl) ether to give 2,3,11,12-dibenzo-1,4,7,10, 13,16 - hexaoxacyclo - octadeca - 2,11 - diene which is then hydrogenated in the presence of p-dioxane and ruthenium oxide. In Example 2, 17 - t - butyl - 2,5,8,11,14 - pentaoxabicyclo [13, 4.0] nonadecane is prepared by treating 1,11 - dichloro - 3,6,9 - trioxaundecane with 4-tbutyl-catechol, n-butanol and sodium hydroxide to give 2,3-(4<SP>1</SP>-t-butylbenzo) - 1,4,7,10, 13 - pentaoxacyclopentadeca - 2 - ene which is then hydrogenated in the presence of p-dioxane and ruthenium on carbon. Also in Example 2, 2,5,8,11,14,17 - hexaoxabicyclo [16, 4.0] doco- -sane is prepared by treating 1,4-dichloro,-3,6,9, 12 - tetra - oxatetradecane with catechol, nbutanol and sodium hydroxide to give2,3-benzo- 1,4,7,10,13,16 hexaoxacyclooctadeca - 2 - ene which is then hydrogenated in the presence of p-dioxane and ruthenium dioxide. |
