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Oxazine derivativesOxazine derivatives R 0595 Spiropyrans and Spirooxazines. Part 1. Synthesis and Photochromic Properties of 9'-Hydroxy-and 9'-Alkoxy-Substituted Spironaphthooxazines. -Compounds such as (III) are transformed to alkoxy derivatives (V) and (VI) via phase-transfer alkylation. The influence of substituents on the spectroscopic properties of the starting and colored forms are investigated. -(VOLOSHIN, N. A.; METELITSA*, A. V.; MICHEAU, J.-C.; VOLOSHINA, E. N.; BESUGLIY, S. O.; VDOVENKO, A. V.; SHELEPIN, N. E.; MINKIN, V. I.; Russ.