Macrocyclic receptor molecules for guanidinium cations. 2. Synthesis and x-ray structures of 2, 6-pyrido crown ethers and their guanidinium complexes

…, HJ Den Hertog Jr, L Kruise, S Harkema

Index: Uiterwijk, Jos W. H. M.; Staveren, Catherina J.van; Reinhoudt, David N.; Hertog, Herman J. den; Kruise, Laminus; Harkema, Sybolt Journal of Organic Chemistry, 1986 , vol. 51, # 9 p. 1575 - 1587

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Citation Number: 31

Abstract

A series of 2, 6-pyrido crown ethers with ring sizes of 15-33 ring atoms has been synthesized. Their complexation with guanidinium salts has been studied by using two phase extraction experiments. The crystal and molecular structures of 2, 6-pyrido-27-crown- 9-guanidinium perchlorate (l: l), 2, 6-pyrido-30-crown-lGguanidinium perchlorate (l: l), 2, 6- pyrido-27-crown-9-guanidinium thiocyanate-ethanol (2: 3: 1), 2, 6-pyrido-27-crown-9- ...