Ferrocenylmethylation and alpha-ferrocenylethylation of indazole were carried out for the first time. Both reactions afforded two isomers, which were characterized by physical and physicochemical methods, among them by X-ray diffraction analysis. 1-(alpha-Ferrocenylethyl)indazole is thermally more stable than the 2-substituted isomer. Both isomers serve as ferrocenylalkylating agents with respect to s-triazole.
Ferrocenylmethylation and alpha-ferrocenylethylation of indazole were carried out for the first time. Both reactions afforded two isomers, which were characterized by physical and physicochemical methods, among them by X-ray diffraction analysis. 1-(alpha-Ferrocenylethyl)indazole is thermally more stable than the 2-substituted isomer. Both isomers serve as ferrocenylalkylating agents with respect to s-triazole.
A novel ferrocenylalkylating reagent. Ferrocenylalkylation of imidazole and its derivatives
作者:V. V. Gumenyuk、Zh. V. Zhilina、Yu. S. Nekrasov、V. N. Babin、Yu. A. Belousov
DOI:10.1007/bf02495368
日期:1997.1
Reactions of α-(1-benzotriazolyl)ethylferrocene (1) with 1,2,4-triazole, imidazole, benzimidazole, and edenine have been studied in the MeOH−HCl, MeOH, and AcOH systems. Compound 1 is a novel ferrocenylalkylating reagent which, unlike α-hydroxyalkylferrocenes, is capable of alkylating imidazole, benzimidazole (even in the absence of an acid catalyst), and adenine (regioselectively at the N(3) position)