Facile Lewis Acid Catalyzed Synthesis of C4 Symmetric Resorcinarenes
Organic Letters2000Vol. 2(24), pp. 3869–3871
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Abstract
The Lewis acid catalyzed condensation of 3-methoxyphenol with octanal produced the C(4) symmetric calix[4]resorcinarene 2, in high yield. Of the numerous stereo- and regioisomers possible, the rccc isomer with C(4) symmetry was the only product isolated (as a racemate). The structure has been established by single-crystal X-ray structure analysis.
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