Protolysis of spironaphtho(aza)pyranoindoles

Christopher D. Gabbutt, John D. Hepworth, B. Mark Heron, Steven M. Partington

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)


Some novel amino-substituted spiroindolinonaphthopyrans have been synthesised. Whilst these compounds exhibit no observable photochromic properties at ambient temperature, protonation results in ring opening to given stable, intensely coloured dyes. Recyclisation and decolouration result on basification.

Original languageEnglish
Pages (from-to)323-328
Number of pages6
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Publication statusPublished - 1 Dec 2000
Externally publishedYes
Event3rd International Symposium on Organic Photochromism - Fukuoka, Japan
Duration: 14 Nov 199918 Nov 1999
Conference number: 3


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