title: Synthesis and conformational characteristics of nonsymmetric pillar[5]arene.
abstract: A new nonsymmetric pillar[5]arene of ethoxymethoxypillar[5]arene (EMpillar[5]arene) has been synthesized. By 2D ROESY analysis of EMpillar[5]arene, the ethoxy and methoxy moieties were completely separated at the upper and lower rims, respectively. Moreover, by the variable-temperature (1)H NMR measurements of EMpillar[5]arene, the rotational movement of phenolic units in EMpillar[5]arene was slow on the NMR time scale or did not occur.
authors.affiliation: Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan. ogoshi@t.kanazawa-u.ac.jp
authors.forename: Tomoki
authors.initials: T
authors.lastname: Ogoshi
authors.forename: Keisuke
authors.initials: K
authors.lastname: Kitajima
authors.forename: Tada-aki
authors.initials: TA
authors.lastname: Yamagishi
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Nakamoto