5′-Substituted Indoline Spiropyrans: Synthesis and Applications

Abstract

Methods for preparation of 5′-substituted spiropyrans, their chemical properties, and the effects of various factors on the relative stabilities of the spiropyrans and their isomeric merocyanine forms are examined, reviewed, and discussed.

Keywords

• 5′-substituted spiropyrans
• photochromism
• photochromic labels and probes