Alkali-Metal Cation Recognition Induced Isomerization of Spirobenzopyrans and Spironaphthoxazins Possessing a Crown Ring as a Recognition Site: Multifunctional Artificial Receptors

Masahiko Inouye*, Masaru Ueno, Naomi Nakayama, Takashi Konishi, Teijiro Kitao, Kikuo Tsuchiya

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

91 Scopus citations

Abstract

Spirobenzopyrans and spironaphthoxazins possessing a monoaza-crown ring were synthesized. Isomerization of these compounds to the open colored merocyanines was induced by recognition of alkali-meted cations and the selectivity of the coloration was found to be governed by severed factors: (1) the size of the crown ring, (2) the position of recognition, (3) electric properties of both the complexed cations and the merocyemine dipoles, emd (4) the length of the alkyl chains connecting the spirobenzopyran units emd the crown units. The spirobenzopyrans represent rationally designed multifunctional artificial receptors for alkali-metal cations.

Original languageEnglish
Pages (from-to)5377-5383
Number of pages7
JournalJournal of Organic Chemistry
Volume57
Issue number20
DOIs
StatePublished - 1992/09/01

ASJC Scopus subject areas

  • Organic Chemistry

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