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An inherently chiral calix[4]crown carboxylic acid in the 1,2-alternate conformation

✍ Scribed by Yu-Xiang Xia, Hao-Hui Zhou, Jiao Shi, Si-Zhe Li, Min Zhang, Jun Luo, Guang-Ya Xiang

Book ID
118801187
Publisher
Springer Netherlands
Year
2012
Tongue
English
Weight
409 KB
Volume
74
Category
Article
ISSN
0923-0750

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New methods to obtain 1,2-bridged calix[4]arene-biscrowns in the 1,2-alternate conformation are described. The stereochemistry of the proximal double functionalization reaction is mainly governed by the solvent, the length of the polyether units and the base used to deprotonate the calix[4]arene.