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Macroheterocycles. 31. Binuclear crown ethers based on 1,1,2,2-tetrahydroxymethanylethane

✍ Scribed by N. G. Luk'yanenko; O. T. Mel'nik

Book ID
112329059
Publisher
Springer US
Year
1987
Tongue
English
Weight
510 KB
Volume
23
Category
Article
ISSN
0009-3122

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## Abstract Syntheses of 1,3–2,4‐calix[4]bis‐crown ethers (**1** and **2**) fixed in the 1,3‐alternate conformation by 1,3‐ and 2,4‐bridges made of two modified polyether chains each containing two 1,2‐phenylene residues and one pyridine or anisyl unit are reported. The structures of compounds **1*