The synthesis and electronic absorption spectra of 3-phenyl-3(4- pyrrolidino-2-substituted phenyl)-3H-naphtho[2,1-b]pyrans: Further exploration of the ortho substituent effect

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Abstract

Introduction of a substituent into a sterically demanding 2-position of a 3-(4-pyrrolidinophenyl) ring of a 3,3-diaryl-3H-naphtho[2,1-b]pyran results in the generation of an additional short wavelength absorption band leading to organic photochromes that appear as dull shades of orange and red.

Original languageEnglish
Pages (from-to)737-745
Number of pages9
JournalTetrahedron
Volume62
Issue number4
Early online date28 Oct 2005
DOIs
Publication statusPublished - 23 Jan 2006
Externally publishedYes

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