Furan ring opening–indole ring closure: SnCl2-induced reductive transformation of difuryl(2-nitroaryl)methanes into 2-(2-acylvinyl)indoles
作者:Maxim G. Uchuskin、Natalia V. Molodtsova、Vladimir T. Abaev、Igor V. Trushkov、Alexander V. Butin
DOI:10.1016/j.tet.2012.03.069
日期:2012.6
2-(2-acylvinyl)-3-(5-alkyl-2-furyl)indoles by reductive recyclization of bis(5-alkyl-2-furyl)(2-nitroaryl)methanes is reported. This transformation was carried out by heating the substrates with SnCl2·2H2O in ethanol. The intermediate nitrosoarene moiety interacted with the furan ring via electrophilic nitrogen attack onto the C(2) position of the furan ring. It was shown that the related bis(5-alkyl
Novel synthetic approach to pyrrolo[1,2-b]cinnolines
作者:Anastasia T. Plieva、Petrakis N. Chalikidi、Andrey V. Gutnov、Anatolij M. Turiev、Oleg P. Demidov、Nicolai A. Aksenov、Taimuraz T. Magkoev、Vladimir T. Abaev
DOI:10.1007/s10593-020-02770-w
日期:2020.8
Straightforward method for the synthesis of pyrrolo[1,2-b]cinnolines starting from 2-nitrobenzaldehydes and 2-methylfurans has been elaborated. The key steps of the process are oxidative furan ring opening with diazonium cation and intramolecular alkylation of azo group of the resulted cinnoline with secondary allyl alcohol.
提出了一种简单的方法,以2-硝基苯甲醛和2-甲基呋喃为原料合成吡咯并[1,2- b ] cinnolines。该方法的关键步骤是用重氮阳离子将呋喃氧化开环,并用仲烯丙醇将所得肉桂醇的偶氮基团进行分子内烷基化。