Intramolecular S<sub>N</sub>Ar Reactions in a Large-Ring Ketocalix[6]arene
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Ketocalix[6]arene 2e was prepared by CrO3 oxidation of the methylene groups of 2a, followed by hydrolysis of the acetate groups. 2e undergoes intramolecular SNAr reactions under the usual methylation conditions (MeI, base), yielding mono- and dixanthone calixarene derivatives.
创建时间：
2007-06-07
