Spiropyrans and spirooxazines 8. 5'-(1,3-Benzothiazol-2-yl)-substituted spiro[indoline-2,3'-naphthopyrans]: synthesis and spectral and photochromie properties

摘要

Novel photochromie 5'-(1,3-benzothiazol-2-yl)-substiluted spiro[indoline-2,3'-naphtho-pyrans] possessing iuminescence properties in both the cyclic and merocyanine forms were synthesized. Unlike the 8'-(1,3-benzothiazol-2-yl)-substituted benzopyran analogs, the synthesized compounds are characterized by the lower relative stability of the merocyanine isomers.