Photochromic substituted naphthopyran compounds

Details Photochromic substituted naphthopyran compounds Photochromic substituted naphthopyran compounds

1995-12-20

1998-04-28

Tucker, Philip

Compositions

Light transmission modifying compositions

Displaying color change

549 42, 549383, 549389, 549457, 546167, 546273, 548440, 548454, G02B 523, C07D31192

Patent

active

057440700

ABSTRACT:
Described are novel reversible photochromic naphthopyran compounds, oxy-bearing substituent at the number 6 carbon atom and certain substituents at the 3-position of the pyran ring. Certain substituents may also be present at the number 5, 7, 8, 9 or 10 carbon atom of the naphthopyran. These compounds may be represented by the following graphic formula: ##STR1## Also described are polymeric organic host materials that contain or that are coated with such compounds. Optically clear articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., certain other naphthopyrans, benzopyrans, and spiro(indoline)type compounds, are also described.

REFERENCES:
patent: 3562172 (1971-02-01), Ono et al.
patent: 3567605 (1971-03-01), Becker
patent: 3578602 (1971-05-01), Ono et al.
patent: 3627690 (1971-12-01), Casella et al.
patent: 4215010 (1980-07-01), Hovey et al.
patent: 4342668 (1982-08-01), Hovey et al.
patent: 4563458 (1986-01-01), Widding et al.
patent: 4637698 (1987-01-01), Kwak et al.
patent: 4720356 (1988-01-01), Chu
patent: 4816584 (1989-03-01), Kwak et al.
patent: 4818096 (1989-04-01), Heller et al.
patent: 4826977 (1989-05-01), Heller et al.
patent: 4931221 (1990-06-01), Heller et al.
patent: 5066818 (1991-11-01), Van Gemert
patent: 5200116 (1993-04-01), Heller
patent: 5238981 (1993-08-01), Knowles
patent: 5244602 (1993-09-01), Van Gemert
patent: 5274132 (1993-12-01), Van Gemert
patent: 5369158 (1994-11-01), Knowles
patent: 5384077 (1995-01-01), Knowles
patent: 5395567 (1995-03-01), Van Gemert et al.
patent: 5405958 (1995-04-01), Van Gemert et al.
patent: 5429774 (1995-07-01), Kumar
patent: 5451344 (1995-09-01), Knowles et al.
patent: 5458814 (1995-10-01), Kumar et al.
patent: 5458815 (1995-10-01), Knowles
patent: 5466398 (1995-11-01), Van Gemert et al.
patent: 5520853 (1996-05-01), Rickwood et al.
patent: 5543533 (1996-08-01), Allegrini et al.
patent: 5552091 (1996-09-01), Kumar
patent: 5573712 (1996-11-01), Kumar et al.
patent: 5578252 (1996-11-01), Van Gemert et al.
patent: 5585042 (1996-12-01), Knowles
Friedel-Crafts and Related Reactions, George A. Olah, Interscience Publishers, vol. 3, Chap. XXXI, pp. 1-8, 1964.
"Regioselective Friedel Crafts Acylation of 1,2,3,4-Tetrahydroquinoline and Related Nitrogen Heterocycles: Effects of NH Protective Groups and Ring Size", Ishihara, Y., et al, J. Chem. Soc., Perkin Trans. 1, pp. 3401-3406, 1992.
Organic Synthesis, vol. 32, John Wiley and Sons, Inc., pp. 72-76 (1952).

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