Synthesis and separation of diastereomeric N-(1-phenylethyl)amides of inherently chiral hydroxydibenzoyloxy-calix[4]arene acetic acids.
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DOI: 10.1002/chir.23503
Abstract: A preparative method for the synthesis of optically pure N-(1-phenylethyl)amides of inherently chiral (cR)- and (cS)-dibenzoyloxy-calix[4]arene acetic acids has been developed. Their absolute stereochemical configuration was determined by X-ray diffraction analysis. read more here.
Keywords: arene acetic; phenylethyl amides; calix arene; amides inherently ... See more keywords
Synthesis and Optical Resolution of Inherently Chiral Fluorescent Calix[4]arenes and Their Application in Chiral Recognition
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DOI: 10.1055/s-0042-1751455
Abstract: Inherently chiral calix[4]arenes were separated by condensation with chiral auxiliary (S)- and (R)-1-phenylethylamine using column chromatography on silica gel; subsequent derivatization with click chemistry furnished compounds with fluorescent properties that can be used for chiral… read more here.
Keywords: chiral recognition; calix arenes; synthesis; inherently chiral ... See more keywords
The Formation of Inherently Chiral Calix[4]quinolines by Doebner–Miller Reaction of Aldehydes and Aminocalixarenes
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DOI: 10.3390/molecules27238545
Abstract: The formation of inherently chiral calix[4]arenes by the intramolecular cyclization approach suffers from a limited number of suitable substrates for these reactions. Here, we report an easy way to prepare one class of such compounds:… read more here.
Keywords: chiral calix; reaction aldehydes; reaction; formation inherently ... See more keywords