title: The first structural and spectroscopic characterisation of a ring-opened form of a 2H-naphtho[1,2-b]pyran: a novel photomerocyanine.
abstract: Heating 4-methoxy-1-naphthol with a 1,1-diarylprop-2-yn-1-ol gave the 2,2-diaryl-6-methoxy-2H-naphtho[1,2-b]pyran together with the novel merocyanine, (E)-2-[3',3'-bis(aryl)allylidene]-4-methoxynaphthalen-1(2H)-one. Brief UV-irradiation of the pyran favoured the formation of the (Z)-merocyanine with longer irradiation and/or acidic conditions favouring the (E)-isomer.
authors.affiliation: Department of Chemical Sciences, School of Applied Science, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK. m.heron@hud.ac.uk.
authors.forename: Stuart
authors.initials: S
authors.lastname: Aiken
authors.forename: Kathryn
authors.initials: K
authors.lastname: Booth
authors.forename: Christopher D
authors.initials: CD
authors.lastname: Gabbutt
authors.forename: B
authors.initials: B
authors.lastname: Mark Heron
authors.forename: Craig R
authors.initials: CR
authors.lastname: Rice
authors.forename: Azzam
authors.initials: A
authors.lastname: Charaf-Eddin
authors.forename: Denis
authors.initials: D
authors.lastname: Jacquemin