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.
Synthesis and properties of optically active ferrocenylethylindazoles
作者:A. A. Simenel、Yu. V. Kuzmenko、M. M. Ilyin、V. V. Gumenyuk、L. V. Snegur、Yu. S. Nekrasov
DOI:10.1023/b:rucb.0000037868.08052.23
日期:2004.4
The stereochemistry of two processes, viz., alpha-ferrocenylalkylation of indazole with optically active S-(+)-1-ferrocenylethanol and the thermal rearrangement of S-(+)-2-N-(ferrocenylethyl)indazole into S-(+)-1-N-(ferrocenylethyl) indazole, was studied. Both reactions proceed stereoselectively.