PHOTOCHROMIC AND THERMOCHROMIC SPIRANES. 34. SYNTHESIS OF PHOTOCHROMIC 5-(4,5-DIPHENYL-1,3-OXAZOL-2-YL)-SUBSTITUTED SPIROBENZOCHROMENEINDOLINES

Abstract

A simple and effective method is proposed for the synthesis of 4,5-diphenyloxazolyl-substituted o‑hydroxynaphthaldehydes. Photochromic spirobenzochromeneindolines containing a 4,5-diphenyloxazole group at position 5 of the benzochromene fragment were obtained. In the cyclic form the new (diphenyloxazolyl)-substituted spiropyrans exhibit luminescent properties.

Authors: N. A. Voloshin, A. V. Chernyshev, A. V. Metelitsa, and V. I. Minkin

English Translation in Chemistry of Heterocyclic Compounds, 2011, 47 (7), pp 865-876

http://link.springer.com/article/10.1007/s10593-011-0848-3