title: Tautomerism and 1H and 13C NMR assignment of methyl derivatives of 9-hydroxyphenalenone.
abstract: 9-Hydroxyphenalenone is a planar multicyclic beta-keto-enol that demonstrates C2V symmetry on the NMR timescale. Off-axis substitution breaks the molecular symmetry and results in tautomers. 1H and 13C NMR assignments were made for 9-hydroxyphenalenone and three methyl derivatives, and the solution-phase tautomers were determined.
authors.affiliation: Augustana College, Chemistry Department, 639 38th Street, Rock Island, IL 61201, USA.
authors.forename: Brian
authors.initials: B
authors.lastname: Honeyman
authors.forename: Charles
authors.initials: C
authors.lastname: Spalding
authors.forename: Dell
authors.initials: D
authors.lastname: Jensen
authors.forename: Robert C
authors.initials: RC
authors.lastname: Haddon