Calix[4]arenes with alkylidene bridges, synthesis and conformational properties

Abstract Calix[4]arenes with one or two alkylidene bridges were synthesized by “2+2” fragment condensation. As predicted by molecular mechanics calculations aliphatic residues at the bridging carbon atom(s) prefer the equatorial position.

ChemInform Abstract: Alkanediyl Bridged Calix(4)arenes: Synthesis, Conformational Analysis, and Rotational Barriers.

ChemInform Abstract: Calix(4)arenes (I) with Alkylidene Bridges: Synthesis and Conformational Properties.