作者:Zh. V. Chirkova、M. V. Kabanova、S. I. Filimonov、A. V. Samet、G. A. Stashina、T. N. Sudzilovskaya
DOI:10.1007/s11172-018-2184-6
日期:2018.6
Chlorination of 1-hydroxyindole-5,6-dicarbonitriles and 1-hydroxypyrrolo[3,4-f]indole-5,7(1H,6H)-diones with N-chlorosuccinimide afforded previously unknown 3,3-dichloro-3Hindole 1-oxides instead of the expected 3-chloro-1-hydroxyindoles. The latter, however, were prepared in good yields by treatment of the above 3,3-dichloro-3H-indole 1-oxides with piperidine in ethanol. Reduction of 3,3-dichloro-5
General synthetic method for NH-indoles starting from N-hydroxyindoles
作者:Zh. V. Chirkova、M. V. Kabanova、S. I. Filimonov、E. A. Smirnova
DOI:10.1007/s11172-019-2539-7
日期:2019.6
A general and efficient method has been developed for the synthesis of NH-indoles bearing electron-accepting substituents via the modification of corresponding N-hydroxyindoles.
作者:Zh. V. Chirkova、F. A. Chernov、S. I. Filimonov、I. G. Abramov、V. V. Plakhtinskii、A. S. Danilova
DOI:10.1134/s1070428017110069
日期:2017.11
Preparation procedure was developed for 3-formylindole-5,6-dicarbonitriles underlain by the treatment of 1-acetoxyindole-5,6-dicarbonitriles with Vilsmeier-Haack reagent; a special feature of this reaction consisted in a replacement of the OAc group for hydrogen. A probable mechanism was assumed of the formation of 3-formylindole-5,6-dicarbonitriles.