37455-85-9Relevant academic research and scientific papers
Photochemical reaction of 4,7-dimethylbenzofurazan using laser
Mori, Akira,Mikami, Yoshiteru,Saito, Hiroaki,Kobayashi, Koji,Miyairi, Shinichi,Ohshima, Hisashi,Takabatake, Tohru
experimental part, p. 619 - 625 (2011/04/26)
4,7-Dimethylbenzofurazan 1 was more reactive than other dimethylbenzofurazans, methylbenzofurazans and benzofurazan for short duration irradiation using a Xe lamp (Pyrex filter). Compound 1 was transformed by irradiation with the third harmonic of a Quanta-Ray Nd:YAG laser (355 nm) into (2Z,4Z)-2,5-dimethylhexa-2,4-dienedinitrile monoxide 2 in CDCl3 at room temperature in excellent yield. With increasing temperature, the isomeric opened form compound 2 is thought to be thermally reverted to the original benzofurazan structure. The rate constant for this recyclization of 2 to 1 using CHCl3 at 293 K was 1.16 x 10-5 s-1. Irradiation of 1 in CDCl3 yields photoproduct compound 2 with a quantum yield of 0.48, and a chemical yield of 99%. The yield of this photoreaction was dependant on the laser power and exposure time. The Japan Institute of Heterocyclic Chemistry.
Reaction of 4,7-dimethylbenzofurazan with singlet oxygen
Takabatake, Tohru,Miyazawa, Tomoyuki,Hasegawa, Minoru,Foote, Christopher S.
, p. 987 - 989 (2007/10/03)
4,7-Dimethylbenzofurazan (1) was transformed by 1O2 produced by irradiation of C60 into 4,7-dimethylbenzofurazan 4,7-endoperoxide (2) in CDCl3 or CD2Cl2 at 0°C in excellent yields. The endo
