ChemInform Abstract: Bisindoles. Synthesis of a New Spirocyclic Photochromic System.

Abstract

organic phosphors, phototropic organic phosphors, phototropic (photochromic) substances T 2200 32 -176 Bisindoles. Synthesis of a New Spirocyclic Photochromic System. -A method for the synthesis of (I) is presented. It forms the unstable betaine (II) upon the action of light. -(SAMSONIYA, SH. A.; DUERR, G.; TRAPAIDZE, M. V.; CHKHAIDZE, E. R.; GOGRICHIANI, E. O.; Chem.