New 2'-substituted 2,2'',6,6''-tetramethyl-1,1':3',1''-terphenyls have been synthesized. Solubility of concave acids 4b-6b could be enhanced by substitution in 4 and 4'' position, allowing the study of hydrogen-bonded heterodimers. Concave acids show larger binding constants for 2-amidopyridines 7 than non-macrocyclic ones, probably due to the prevention of homodimer formation by the macrocyclic shielding. New 2,6-diarylbenzyl alcohols 1d, 8d and 9d have been synthesized and tested in protonation reactions. New functional groups were introduced into the 2' position: OH (phenols 1f and 12f) and NH2 (aniline 1j). The basicity of aniline 1j in ethanol was determined by titration and was compared to other bases. Also sulfonic acids 1l and 17l were prepared, and the corresponding methyl esters 1m and 17m were tested as methylating agents.
新的2'-取代的2,2'',6,6''-四甲基-1,1':3',1''-
联苯已经合成。凹面酸
4b-
6b的溶解度可以通过在4和4''位置进行取代而增强,从而允许研究氢键异二聚体。凹面酸对2-
氨基吡啶7显示出比非大环化合物更大的结合常数,可能是由于大环屏蔽阻止了同二聚体形成。新的2,6-二芳基
苄醇1d、
8d和
9d已经合成并在质子化反应中进行了测试。新的官能团被引入到2'位置:OH(
酚1f和
12f)和NH
2(
苯胺1j)。
苯胺1j在
乙醇中的碱性通过滴定法确定,并与其他碱进行了比较。此外,
磺酸1l和
17l已经制备,并且相应的甲酯
1m和
17m作为甲基化试剂进行了测试。