A New Approach to Enantiopure Inherently Chiral Calix[4]arenes: Determination of Their Absolute Configurations

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• 作者：Zhen-Xiang Xu ; Chun Zhang ; Qi-Yu Zheng ; Chuan-Feng Chen ; Zhi-Tang Huang
• 刊名：Organic Letters
• 出版年：2007
• 出版时间：October 25, 2007
• 年：2007
• 卷：9
• 期：22
• 页码：4447 - 4450
• 全文大小：132K
• 年卷期：v.9,no.22(October 25, 2007)
• ISSN：1523-7052

文摘

A new approach to the synthesis of meta-substituted enantiopure inherently chiral calix[4]arenes by introducing L-Boc-proline as dual functionsof the chiral auxiliary has been described. Moreover, the absolute configurations of the enantiomers were determined by CD spectra, X-raycrystallographic analysis, and the chemical derivative method.