6287-82-7, Chemical Research Letters, May 2021. As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. In a article, 6287-82-7, molcular formula is C8H4Br2S, introducing its new discovery.
Intramolecular reaction of 2-tropylio-3-(5-substituted 2-furyl) benzothiophenes (3), prepared from the corresponding 2-cycloheptatrienyl-3-(5- substituted 2-furyl)benzothiophenes (2), afforded the beta-(azuleno[1,2-b] benzothienyl)-alpha,beta-unsaturated ketones (4), which are otherwise difficult to obtain, in moderate yields. The reaction involves a ring-opening process of the furan ring by intramolecular attack of the tropylium ion onto the 2-position of the furan ring. Similarly, beta-(azuleno[2,1-b]benzothienyl)- alpha,beta-unsaturated ketones (8) were obtained from the corresponding 3-tropylio-2-(5-substituted 2-furyl)benzothiophenes (7) albeit in lower yields. The molecular and crystal structures of the methyl ketone derivative, 8a, are discussed on the basis of X-ray structure analysis.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 6287-82-7 is helpful to your research. 6287-82-7
Reference：
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem