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Synthesis 2012(3): 439-445
DOI: 10.1055/s-0031-1290066
DOI: 10.1055/s-0031-1290066
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New York
Expeditious Synthesis of Papilionaceous Molecules Containing Oligobenzofurans
Further Information
Received
30 August 2011
Publication Date:
16 January 2012 (online)
Publication History
Publication Date:
16 January 2012 (online)
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Abstract
An efficient synthetic route to construct particular papilionaceous molecules containing oligobenzofurans is described. The key steps involved composing the backbone of the molecules by the Sonogashira cross-coupling reaction, followed by closing the benzofuran ring under alkaline conditions, and further aromatic cyclization of a multi-benzofuranyl precursor using ferric chloride as the oxidative reagent. Basic optical studies (UV-Vis, fluorescence, and fluorescence quantum yield) have been carried out on the synthesized molecules.
Key words
expeditious synthesis - papilionaceous molecule - oligobenzofurans - ferric chloride - oxidative aromatic cyclization
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