Crown ethers with lateral ortho-terphenyl units: effect of ester groups and sodium salts on the mesomorphic properties

N Steinke, M Jahr, M Lehmann, A Baro…

Index: Steinke, Nelli; Jahr, Michael; Lehmann, Matthias; Baro, Angelika; Frey, Wolfgang; Tussetschlaeger, Stefan; Sauer, Sven; Laschat, Sabine Journal of Materials Chemistry, 2009 , vol. 19, # 5 p. 645 - 654

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Citation Number: 23

Abstract

Unsymmetrical crown ether derivatives 7 and 12 with one lateral o-terphenyl unit bearing different ester substituents were synthesized starting from methoxymethyl (MOM) protected bromobenzenes 3 and 8 by conversion into the respective borolanes 4 and 9, twofold Suzuki coupling with dibromobenzo [15] crown-5, acidic deprotection and finally esterification either with various alkanoic chlorides or gallic acids. Reaction with NaI ...