SYNTHESIS OF PHOTOCHROMIC BIS-1,3-DIAZABICYCLO- [3.1.0]HEX-3-ENE DERIVATIVES HAVING A BISINDOLE LINKAGE

A facile synthesis of bis-photochromic bicyclic aziridine derivatives containing alkanediylbisindole linkage, which behave as photochromic materials, is reported. The photochromic structure–behavior relationship of the synthesized compounds has been analyzed.

alkanediylbisindole, 1,3-diazabicyclo[3.1.0]hex-3-ene, bis-photochromic, Vilsmeier–Haack reaction.