Synthesis of apara-Methoxy Substituted Tribenzocyclotriyne
- 1 January 1993
- journal article
- letter
- Published by Georg Thieme Verlag KG in Synlett
- Vol. 1993 (02) , 149-150
- https://doi.org/10.1055/s-1993-22384
Abstract
The synthesis and characterization of a methoxy substituted tribenzocyclotriyne, 1,2:5,6:9,10-tri(2,5-dimethoxyphenyl)cyclododeca-1,5,9-triene-3,7,11-triyne (2) is described. The cyclotriyne was prepared by either a Stephens-Castro or a palladium catalyzed coupling of (2-iodo-3,6-dimethoxyphenyl)ethyne. Ceric ammonium nitrate was used to demethylate 2 to form 1,2:5,6-di(2,5-dimethoxyphenyl)-9,10-(1,4-benzoquinone)cyclododeca-1,5,9-triene-3,7,11-triyne (6).Keywords
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