PHOTO- AND THERMOCHROMIC SPIRANS. 37. NEW SYMMETRICAL BISSPIROPYRANS OF THE INDOLINE SERIES
DOI:
https://doi.org/10.1007/945Keywords:
4, 6-dihydroxy-5-methylisophthalaldehyde, merocyanine, spiropyran, absorption spectra, molar extinction coefficient, photochromismAbstract
New symmetrical bisspiropyrans of the indoline series, which have photochromic properties and are characterized by substantially higher absorption capacity of cyclic isomers in comparison to the monospiropyrans, were obtained on the basis of 4,6-dihydroxy-5-methylisophthalaldehyde.
Authors: N. A. Voloshin, E. V. Solov'eva, S. O. Bezugliy, A. V. Metelitsa, and V. I. Minkin
English Translation in Chemistry of Heterocyclic Compounds, 2012, 48 (9), pp 1361-1370
http://link.springer.com/article/10.1007/s10593-012-1145-5