Synthesis and complexing properties of [2. n](2, 6) Pyridinocrownophanes

S Inokuma, H Ide, T Yonekura, T Funaki…

Index: Inokuma, Seiichi; Ide, Hayato; Yonekura, Tomomi; Funaki, Takashi; Kondo, Shin-Ichi; Shiobara, Satoru; Yoshihara, Toshitada; Tobita, Seiji; Nishimura, Jun Journal of Organic Chemistry, 2005 , vol. 70, # 5 p. 1698 - 1703

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Citation Number: 13

Abstract

[2. n](2, 6) Pyridinocrownophanes (3a-e) were efficiently prepared by intramolecular [2+ 2] photocycloaddition of vinylpyridine derivatives under irradiation using a 400-W high- pressure mercury lamp through a Pyrex filter. They were of cis-configuration with respect to the cyclobutane ring, which was proven by the specific methine proton NMR resonances at δ 3.98-4.08. From ESI-MS analysis 3a-e were found to form 1: 1 complexes with Ag+ cation. ...