Abstract
Azacrown macrocycles were prepared in 70-76% yield by the condensation reaction of 1,2-, 1,3-, and 1,4-bis(4-amino-5-mercapto-4H-1,2,4-triazol-3-yl)alkanes with bisaldehydes in acetic acid under reflux. Reaction of two of these azacrown macrocycles with iodomethane and benzyl chloride furnished exclusively the target lariat macrocycles in good yields.
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