Naphthopyrans. Structural Features and Photochromic Properties
- 1 May 1997
- journal article
- research article
- Published by Taylor & Francis Ltd in Molecular Crystals and Liquid Crystals
- Vol. 297 (1), 131-138
- https://doi.org/10.1080/10587259708036113
Abstract
Structural modifications to photochromic 3H-naphtho[2,1 -b]pyrans and 2H-naphtho[1,2-b]pyrans have produced compounds that have found utility in plastic ophthalmic lens applications. The influence of substituents on color, optical density, and fade rate are reported. Synthetic routes to products and key intermediates are also outlined.Keywords
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