Henry and Mannich reactions of polynitroalkanes in ionic liquids
作者:Margarita A. Epishina、Igor V. Ovchinnikov、Alexander S. Kulikov、Nina N. Makhova、Vladimir A. Tartakovsky
DOI:10.1016/j.mencom.2011.01.009
日期:2011.1
Based on Henry and Mannich reactions of polynitroalkanes for the first time implemented in ionic liquids, ecologically pure and safe methods for the synthesis of polynitro alcohols and N -2,2,2-trinitroethyl derivatives of low basic amino compounds (urea, acetamide, 4-amino-3-methylfuroxan) have been elaborated.
Synthesis and nitration of 3-R-4-(2,2,2-trinitroethyl)aminofuroxans
作者:M. A. Epishina、A. O. Finogenov、A. S. Kulikov、N. N. Makhova、I. V. Anan’ev、V. A. Tartakovsky
DOI:10.1007/s11172-012-0209-0
日期:2012.8
Simple methods for the synthesis of 3-R-4-(2,2,2-trinitroethyl)aminofuroxans were developed based on the Mannich reaction of N,N′-bis(3-R-furoxan-4-yl)methylenediamines with trinitromethane or 3-R-4-aminofuroxans with trinitroethanol or with CH2O and trinitromethane. The Mannich bases obtained were studied in the nitration reaction, which showed their ability to form nitramines depending on substituents on the furoxan ring.
Straightforward Access to the Nitric Oxide Donor Azasydnone Scaffold by Cascade Reactions of Amines
作者:Egor S. Zhilin、Dmitry M. Bystrov、Ivan V. Ananyev、Leonid L. Fershtat、Nina N. Makhova
DOI:10.1002/chem.201903526
日期:2019.11.13
construction strategy involves a diazotization/azo coupling/elimination/double rearrangement cascade sequence of readily available amines. The current protocol enables the generation of a diverse array of azasydnones, including previously hardly accessible heteroaryl substituted azasydnones (25 examples, 70-97 % yield) with a good functional group tolerance under very mild conditions. Preliminary NO-releasing
Reactions of furoxanyl and furazanyl diazonium salts with NaNO2 in weakly acidic medium, a new approach to the preparation of nitrofuroxans and nitrofurazans
作者:A. O. Finogenov、I. V. Ovchinnikov、A. S. Kulikov、N. N. Makhova
DOI:10.1007/s11172-012-0068-8
日期:2012.2
A new approach to the preparation of nitrofuroxans and nitrofurazans is suggested based on the diazotization of aminofuroxans and aminofurazans in aqueous organic medium at pH = 4–5 in the presence of excess NaNO2.
Base-induced rearrangement of 4-amidino-3-R-furoxans into 1-substituted 3-(1-nitroalkyl)-5-R-1H-1,2,4-triazoles
作者:S. I. Molotov、A. S. Kulikov、K. A. Lyssenko、N. N. Makhova
DOI:10.1007/s11172-013-0170-6
日期:2013.5
A new base-inducedrearrangement of furoxans, viz., a recyclization of 4-amidino-3-Rfuroxans into 1-substituted 3-(1-nitroalkyl)-5-R-1H-1,2,4-triazoles in the presence of alkali metal alkoxides and into 3-acyl-5-R-1H-1,2,4-triazoles in aqueous alkaline solutions, was found.