Synthesis of Doubly Azacrowned Thiacalixarenes

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Abstract
Under selected conditions, 1,2:3,4-doubly crowned p-tert-butyl-thiacalix[4]arene in cone conformation and 1,3:2, 4-doubly crowned p-tert-butyl-thiacalix[4]arene in 1,3-alternate conformation were obtained through aminolysis in high to good yield, respectively.

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