2,2,4,6-Tetraaryl-2H-benzo[h]chromenes: The influence of electronic communication between aryl substituents on their photochromism

New photochromic 3-thienyl-3H-naphtho[1,2-b]pyrans fused to lactone and indole rings were efficiently prepared using a one-pot acid-catalyzed reaction, at room temperature, as the key step. These colorless photoswitches acquire intense red/brown shades under UV light and return spontaneously to the colorless state in the dark. The combination of the 3 heterocyclic rings assures a broad and intense absorption in the visible region and it allows a full switch between the two states in less than 1 min, at room temperature.

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2,2,4,6-Tetraaryl-2H-benzo[h]chromenes: The influence of electronic communication between aryl substituents on their photochromism

Cited by 2 publications

References 35 publications

Synthesis of photochromic 3-arylvinyl-3H-naphtho[2,1-b]pyrans: An unexpected one-step annulation to cyclopenta[b]naphtho[1,2-d]furans

Synthesis of photochromic 3-arylvinyl-3H-naphtho[2,1-b]pyrans: An unexpected one-step annulation to cyclopenta[b]naphtho[1,2-d]furans

Synthesis of Photochromic Heterocyclic-Fused Naphthopyrans. Tuning the Color and Fading Speed

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