119802-59-4Relevant articles and documents
Naphtoquinone Methide Type Near-I.R. Dye: The Properties and Structure of 4-(2'-Acetylamino-4'-diethylaminophenylimino)-1,4-dihydronaphthylidene-malononitrile
Kubo, Yuji,Kuwana, Minoru,Yoshida, Katsuhira,Tomotake, Yasuko,Matsuzaki, Takao,Maeda, Shuichi
, p. 35 - 37 (1989)
The introduction of an acetylamino group at the 2'-position in the aniline ring of a naphhoquinone methide dye produced a red shift with a large increase in the molecular extinction coefficient in CHCl3 solution, and an intramolecular ring-closure reaction of the compound under alkaline conditions gave a new blue dye; the stereochemistry of this chromophoric system was determined by X-ray analysis.