Journal
TETRAHEDRON LETTERS
Volume 48, Issue 25, Pages 4369-4372Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2007.04.089
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Discotic helical macrocycle constructed by aromatic tertiary amide was effectively synthesized using dichlorotriphenylphosphorane as the condensation reagent. The yield was significantly higher when meta-substituted diaminobenzene was used as the linkage for a two 1,3,5-tris(4-carboxyphenyl)benzene moiety than when para-substituted diaminobenzene was used. The yield is thus dependent on whether the pre-organized partial diamide structure suits the construction of the macrocyclic structure. (c) 2007 Elsevier Ltd. All rights reserved.
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