title: Calix[4]azulene.
abstract: Azulene reacts with paraformaldehyde in the presence of florisil to give excellent yields of calix[4]azulene.
authors.affiliation: Department of Chemistry, Illinois State University, Normal, Illinois 61790-4160, USA.
authors.forename: Denise A
authors.initials: DA
authors.lastname: Colby
authors.forename: Timothy D
authors.initials: TD
authors.lastname: Lash