Gabbutt, Christopher D., Heron, B. Mark, Instone, Alicia C., Horton, Peter N. and Hursthouse, Michael B. (2005) Synthesis and photochromic properties of substituted 3H-naphtho[2,1-b]pyrans. Tetrahedron, 61 (2). pp. 463-471. ISSN 0040-4020

The synthesis and spectroscopic properties of novel 3H-naphtho[2,1-b]pyrans are described. Subtle variation of the colour of the photo-generated merocyanine dyes derived from these naphthopyrans can be accomplished by controlling the steric interactions between a terminal pyrrolidine donor group and a proximal substituent.

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