Syntheses,Crystal Structures and Complexing Properties of 1,3-Distal Calix[4]arene Schiff Bases
摘要
Novel 1,3-distal p-tert-butylcalix[4]arene Schiff bases were efficiently synthesized in three steps. At first p-tert-butylcalix[4]arene was reacted with N-2-hydroxyethylphthalimide catalyzed by TPP/DEAD or alkylated with ω-haloalkylphthalimide in the system of K2CO3/KI/CH3COCH3 to give 1,3-distal diphthalimidoalkyl calixarenes, which were in turn hydrazinolyzed to give diaminoalkyl calixarenes. Then with the aid of the condensation of active calixarene amines with salicylaldehyde, 2-hydroxy-1-naphthaldehyde or pyridine-2-carboxaldehyde, a series of 1,3-distal calixarene Schiff bases was prepared in satisfied yields. The single crystal structures and complexing properties of these Schiff bases for transition metal ions were studied.
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Gu Wei-wei Li Liang, Chao‐Guo Yan. Syntheses,Crystal Structures and Complexing Properties of 1,3-Distal Calix[4]arene Schiff Bases[J]. 未知来源, 2010.
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