Single-Step, Regioselective Synthesis of Diazadioxacalix[4]arenes and Diazadioxa[14]cyclophanes Bearing an Alternating N/O-Bridge Pattern
作者:Nicholas P. Bizier、Jack P. Vernamonti、Jeffrey L. Katz
DOI:10.1002/ejoc.201200137
日期:2012.4
Described is a single-stepsynthesis of diazadioxacalix[4]arenes and diazadioxa[14]cyclophanesbearing an alternatingN/O-bridge substitution pattern. The macrocycles are formed regioselectively by condensation of 3- or 4-aminophenols with 1,5-difluoro-2,4-dinitrobenzene. Conformational properties of the macrocyclic products are discussed, as well as mechanistic details of the synthesis leading to the