The synthesis and structural characterization of the first bis(benzocrown ethers) with polyyne linkages†
Abstract
Bis(benzo-15-crown-5)buta-1,3-diyne and bis(benzo-15-crown-5)octa-1,3,5,7-tetrayne were successfully synthesized and characterized by X-ray crystallography. Experiments with poly[bis(benzocrown ethers)diacetylene] were also studied.