作者:A. B. Sheremetev、V. O. Kulagina、I. A. Kryazhevskikh、T. M. Melnikova、N. S. Aleksandrova
DOI:10.1023/a:1020931511013
日期:——
The reactions of 3-nitro-4-R-furazans with ammonia were studied. The effect of the substituent R on the specific features of the nucleophilic substitution reaction observed was considered. The nitro group attached to the furazan ring can act as both the leaving group and the activating group facilitating the displacement of the second substituent (for example, OR' or N(NO2)R').
Sheremetev; Kharitonova; Mantseva, Russian Journal of Organic Chemistry, 1999, vol. 35, # 10, p. 1525 - 1537
Novel alkynyl(phenyl)iodonium salts: nitrofurazanylate as a counterion
作者:Aleksei B Sheremetev、Elena V Mantseva
DOI:10.1016/s0040-4039(01)01050-4
日期:2001.8
Alkynyl(phenyl)iodonium nitrofurazanylates 6-9 were prepared by reaction of 3-hydroxy-4-nitrofurazan 4 with iodosylbenzene and terminal acetylenes. (C) 2001 Elsevier Science Ltd. All rights reserved.
Synthesis and X-Ray Crystal Structure of Bis-3,3′-(nitro-NNO-azoxy)-difurazanyl Ether
作者:Aleksei B. Sheremetev、Sergei E. Semenov、Vladimir S. Kuzmin、Yurii A. Strelenko、Sema L. Ioffe
Two approaches to the synthesis of bis-3,3'-(nitro-NNO-azoxy)difurazanyl ether 2 have been tested, that is, varying the sequence of the introduction of the nitro-NNO-azoxy group and ether bridge. Difurazanyl ether formation through base-promoted transformation of nitrofurazans has been studied in which the nitro groups were activated by ortho electron-withdrawing substituents such as nitro-NNO-azoxy and tert-butyl-NNO-azoxy groups. The nitro-NNO-azoxy group was formed by destructive N-nitration of the tert-butyl-NNO-azoxy group. The X-ray crystal structure of 2 is reported.