Av. Metelitsa et al., THE STRUCTURE AND PHOTOCHEMICAL PROPERTIES OF NOVEL FULGIDES OF INDOLINE SERIES WITH AN ADAMANTYLIDENE FRAGMENT, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 297, 1997, pp. 93-98
Two novel fulgides of the indoline series with an adamantylidene fragm
ent have been synthesized and their structure and photochemical proper
ties studied. Whereas mantylidene-(1'-methyl-3'-indolylmethylene)succi
nc anhydride(I) possesses Z-configuration, its homologue, containing a
methyl group at the double bond (II), has E-configuration about the C
=C bond. The presence of the bulky adamantylidene groups in I and II r
esults in lowering of the photocoloration efficiency compared to respe
ctive isopropylidene derivatives.