作者:Rob G. Janssen、Willem Verboom、David N. Reinhoudt、Alessandro Casnati、Margret Freriks、Andrea Pochini、Franco Ugozzoli、Rocco Ungaro、Pedro M. Nieto、Mar Carramolino、Félix Cuevas、Pilar Prados、Javier de Mendoza
DOI:10.1055/s-1993-25868
日期:——
New partially alkylated calix[6]arenes have been synthesized. Depending on the conditions, mono-, 1,2-di-, 1,3-di, 1,2,3-tri-, 1,3,5-tri-, 1,2,4,5-tetra-, and 1,2,3,4,5-pentamethylated derivatives of p-tert-butylcalix[6]arene could be obtained in moderate to good yields. Methylation or benzylation of the parent calix[6]arene showed a regioselectivity towards 1,2-di-, and 1,2,3-trisubstitution. The solid state structure of 1,2,4,5-tetrasubstituted p-tert-butylcalix[6]arene [R=O(CH2CH2O)2CH3] has been elucidated by X-ray analysis.
已合成了新的部分烷基化杯[6]芳烃。根据条件不同,可得到单甲基、1,2-二甲基、1,3-二甲基、1,2,3-三甲基、1,3,5-三甲基、1,2,4,5-四甲基和1,2,3,4,5-五甲基对叔丁基杯[6]芳烃衍生物,产率中等至良好。对母体杯[6]芳烃进行甲基化或苄基化后,1,2-二甲基和1,2,3-三甲基取代具有区域选择性。1,2,4,5-四甲基对叔丁基杯[6]芳烃[R=O(CH2CH2O)2CH3]的固态结构已通过X射线分析阐明。