Photochromic naphthacenequinones, process for their preparation

Organic compounds -- part of the class 532-570 series – Organic compounds – Tetracyclo naphthacene configured ring system having at...

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552201, C07C 5036, C07C 5022

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active

052083543

ABSTRACT:
Compounds of formula I or V or mixtures thereof ##STR1## wherein

REFERENCES:
patent: 4036805 (1977-07-01), Tsujimoto et al.
Chem. Abst. vol. 94, No. 7, 47012m (1980).
Y. E. Gerasimenko et al., Zhurnal Organicheskoi Khimii, vol. 7, No. 11, pp. 2413-2415 (1971).
Y. E. Gerasimenko et al., Zhurnal Organicheskoi Khimii, vol. 16, No. 9, pp. 1938-1945 (1980).

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