title: Corannulene subunit acts as a diene in a cycloaddition reaction: synthesis of C80H32 corannulyne tetramer.
abstract: Distortion of six-membered rings in corannulene subunits of corannulyne (1,2-didehydrocorannulene) cyclotrimer activates the system for a cycloaddition reaction with another corannulyne unit. This unprecedented cycloaddition in which a corannulene fragment acts as a diene produces the largest oligomer of corannulyne reported to date. X-ray crystallography reveals the highly nonplanar structure of the tetramer which exhibits conformational and optical absorption properties very different from those of the cyclotrimer.
authors.affiliation: Department of Chemistry, Mississippi State University, Mail Stop 9573, Mississippi State, Mississippi 39762, USA.
authors.forename: Michael
authors.initials: M
authors.lastname: Yanney
authors.forename: Frank R
authors.initials: FR
authors.lastname: Fronczek
authors.forename: Andrzej
authors.initials: A
authors.lastname: Sygula