Heterocalixarenes featuring the benzimidazol-2-one subunit. Synthesis and X-ray structural studies of solvent inclusions
作者:Edwin Weber、J�rg Trepte、Karsten Gloe、Manfred Piel、M�ty�s Czugler、Victor Ch. Kravtsov、Yurri A. Simonov、Janusz Lipkowski、Edward V. Ganin
DOI:10.1039/p29960002359
日期:——
and 5f, respectively. The calix hosts 4a, 5a–c and 5f form crystalline inclusion compounds with organic solvent molecules. X-Ray crystal structures of the solvent inclusions 5a·methylene chloride (1 : 1), 5b·toluene·water (1 : 2 : l), Sc·acetone·methylene chloride (1 : 1 : 1) and 5f·toluene (1 : 3) have been studied. The molecular structures show a general trend of having enhanced calix-forming ability
已经合成了异杯芳烃4a,b和5a–f。化合物4a,b和5a–d是通过封端/解封,高稀释度和模板(Cs 2 CO 3)技术以大约1:2或1:3的环状低聚物比例得到4a / 5a和4b / 5b。5a和5b的甲醚基团的裂解分别得到四酚5e和5f。杯状主体4a,5a–c和5f与有机溶剂分子形成晶体夹杂物。溶剂夹杂物5a·二氯甲烷(1:1),5b·甲苯·水(1:2:l),Sc·丙酮·二氯甲烷(1:1 1:1)和5f·甲苯( 1:3)已经研究过。与相同环尺寸的传统杯[8]芳烃相比,分子结构显示出杯形成能力增强的总体趋势。