364-76-1Relevant articles and documents
Unlocking Amides through Selective C–N Bond Cleavage: Allyl Bromide-Mediated Divergent Synthesis of Nitrogen-Containing Functional Groups
Govindan, Karthick,Chen, Nian-Qi,Chuang, Yu-Wei,Lin, Wei-Yu
supporting information, p. 9419 - 9424 (2021/11/30)
We report a new set of reactions based on the unlocking of amides through simple treatment with allyl bromide, creating a common platform for accessing a diverse range of nitrogen-containing functional groups such as primary amides, sulfonamides, primary amines, N-acyl compounds (esters, thioesters, amides), and N-sulfonyl esters. The method has potential industrial applicability, as demonstrated through gram-scale syntheses in batch and in a continuous flow system.
Substituent effects on the isomerization of hydrazone switches driven by the intramolecular hydrogen bond
Lu, Chaocao,Htan, Bu,Fu, Shitao,Ma, Chunmiao,Gan, Quan
, p. 4010 - 4016 (2019/07/03)
In this work, the substituent effects on hydrogen bonding in one kind of hydrazone-based switch are revealed. The E/Z isomerization ratios of these hydrazones and their intramolecular hydrogen bond strengths in the Z form were evaluated using NMR technique. Linear correlations between these parameters and Hammett empirical values for substituent effects are explored as well.
Selective partial hydrogenation of dinitrobenzenes to nitroanilines catalyzed by Ru/C
Hou, Jie,Ma, Yonghuan,Li, Yuhan,Guo, Fang,Lu, Lianhai
scheme or table, p. 974 - 975 (2009/04/06)
Ru/C was found to be a highly effective catalyst for the selective partial hydrogenation of a range of dinitrobenzenes to their corresponding nitroanilines with excellent selectivity under mild conditions. Furthermore, the effect from other substitute groups of dinitrobenzenes on partial hydrogenation was also explored in this study. Copyright
Effect of the electronic structure of the radical anions of 4-substituted 1,2-and 1,3-dinitrobenzenes on the regioselectivity of reduction of the nitro groups
Orlov,Begunov,Demidova,Rusakov
, p. 76 - 81 (2007/10/03)
Theoretical and experimental regularities of the regioselectivity of the reduction of one of the two nitro groups in unsymmetrical dinitrobenzenes were studied. It was found that the regioselectivity of the formation of isomeric nitroanilines depends on the structure of the substrate and the nature of the reducing agent. The reduction regioselectivity model was verified, according to which radical anion protonation is the major reaction direction. Pleiades Publishing, Inc. 2006.
Heterogeneous catalytic transfer hydrogenation of aromatic nitro and carbonyl compounds over cobalt(II) substituted hexagonal mesoporous aluminophosphate molecular sieves
Mohapatra, Susanta K,Sonavane, Sachin U,Jayaram, Radha V,Selvam, Parasuraman
, p. 8527 - 8529 (2007/10/03)
Catalytic transfer hydrogenation of aromatic nitro and carbonyl compounds was carried out using novel cobalt(II) substituted hexagonal mesoporous aluminophosphate molecular sieves. The catalyst showed excellent yield with good recycling capability.
Catalytic reduction of dinitrobenzenes using a noble metal catalyst and iron or iron salts
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, (2008/06/13)
There is provided an improved process for the reduction of optionally substituted dinitrobenzenes to the corresponding nitroanilines with high yields which comprises contacting the dinitrobenzene with hydrogen in an acidic medium in the presence of a catalytic amount of a combination of a noble metal hydrogenation catalyst, and iron or an iron salt. Isomer specific reductions may be achieved with those compounds containing suitable directing substituents. The 2-halo-5-nitroanilines which may be produced in this process may be converted via a multi-step synthesis to useful 1-aryl-4-substituted 1,4-dihydro-5H-tetrazol-5-one herbicides.
Selective hydrogenation of polynitroaromatic derivatives with noble metal catalysts in the presence of catalytic amounts of iron
Theodoridis,Manfredi,Krebs
, p. 6141 - 6144 (2007/10/02)
Hydrogen over PtO2, 5%Pd(c), PdCl2, or 5%Rh(al2O3), in the presence of catalytic amounts of iron and under mild reaction conditions, resulted in the selective reduction of a variety of polynitroaromatic compounds in high yields.
Hair dye preparations containing nitrodiphenylamine derivative
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, (2008/06/13)
This invention encompasses compounds of the formula STR1 wherein R1 and R2 independently are hydrogen, C1-4 alkyl, or C2-4 hydroxyalkyl; one of R3 to R7 is --SO3 H or --COOH; and the remaining of R3 to R7 independently are hydrogen, chlorine, C1-4 alkyl, C1-4 alkoxy, or --NR8 R9, where R8 and R9 independently are hydrogen, C1-4 alkyl, C2-4 alkoxy, or where --NR8 R9 is piperidine, morpholine, piperazine, or pyrrolidone; or a water soluble salt thereof; hair dye preparation containing these compounds, and methods for dyeing hair using such preparation.
4-Fluoro-3-nitro anilines
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, (2008/06/13)
Compounds of formula: SPC1 Wherein W is EQU1 or EQU2 in which: (a) R4 and R5 are 5 identical or different and represent hydrogen, monovalent aliphatic, substituted or unsubstituted aryl, aralkyl and cycloalkyl, providing that not more than 1 of R4 or R5 is hydrogen, and (b) R3 is a divalent aliphatic radical.
