4792-60-3Relevant academic research and scientific papers
Microwave-assisted reduction of aromatic nitro compounds with novel oxo-rhenium complexes
Grieco, Gabriele,Blacque, Olivier
, (2021/09/16)
The reduction of several aromatic nitro compounds to amines by means of the two novel catalytic systems ([IMes]2ReOBr3)/PhSiH3 and ([Py]3ReNOBr2)/PhSiH3 under microwave irradiation is here reported. These two systems were able to perform the reduction of nitro groups with higher TON and TOF when compared with previously reported systems based on oxo-rhenium core under standard heating, although they showed a lesser broad reaction scope compared with the known systems.
COMPOUNDS, COMPOSITIONS, AND METHODS FOR MODULATING CFTR
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Paragraph 0155, (2017/08/01)
The present disclosure is directed to disclosed compounds that modulate, e.g., address underlying defects in cellular processing of CFTR activity.
Palladium-catalyzed amination of aryl chlorides and bromides with ammonium salts
Green, Rebecca A.,Hartwig, John F.
supporting information, p. 4388 - 4391 (2015/01/08)
We report the palladium-catalyzed coupling of aryl halides with ammonia and gaseous amines as their ammonium salts. The coupling of aryl chlorides and ortho-substituted aryl bromides with ammonium sulfate forms anilines with higher selectivity for the primary arylamine over the diarylamine than couplings with ammonia in dioxane. The resting state for the reactions of aryl chlorides is different from the resting state for the reactions of aryl bromides, and this change in resting states is proposed to account for a difference in selectivities for reactions of the two haloarenes.
Pinacol as a new green reducing agent: Molybdenum-catalyzed chemoselective reduction of sulfoxides and nitroaromatics
Garcia, Nuria,Garcia-Garcia, Patricia,Fernandez-Rodriguez, Manuel A.,Rubio, Ruben,Pedrosa, Maria R.,Arnaiz, Francisco J.,Sanz, Roberto
supporting information; experimental part, p. 321 - 327 (2012/04/11)
Pinacol is disclosed as a new chemoselective and environmentally benign reducing agent for sulfoxides and nitroaromatics assisted by readily available dichlorodioxomolybdenum(VI) complexes as catalysts. A wide range of substrates including those bearing challenging functional groups has been efficiently and selectively reduced with acetone and water being the only by-products of these reactions. Copyright
Novel organophosphorus derivatives of indazoles and use thereof as medicinal products
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Page/Page column 10, (2008/06/13)
The present invention relates in particular to novel chemical compounds, particularly to novel organophosphorus derivatives of indazoles, to the compositions containing them, and to the use thereof as medicinal products for treating cancers.
Nitrogen-containing aromatic derivatives
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, (2008/06/13)
Compounds represented by the following general formula: [wherein Ag is an optionally substituted 5- to 14-membered heterocyclic group, etc.; Xg is —O—, —S—, etc.; Yg is an optionally substituted C6-14 aryl group, an optionally substituted 5- to 14-membered heterocyclic group, etc.; and Tg1 is a group represented by the following general formula: (wherein Eg is a single bond or —N(Rg2)—, Rg1 and Rg2 each independently represent a hydrogen atom, an optionally substituted C1-6 alkyl group, etc. and Zg represents a C1-8 alkyl group, a C3-8 alicyclic hydrocarbon group, a C6-14 aryl group, etc.)], salts thereof or hydrates of the foregoing.
Novel 6-substituted uracil analogs as inhibitors of the angiogenic actions of thymidine phosphorylase
Klein, Robert S.,Lenzi, Michelle,Lim, Timothy H.,Hotchkiss, Kylie A.,Wilson, Phyllis,Schwartz, Edward L.
, p. 1257 - 1263 (2007/10/03)
Thymidine phosphorylase (TP) catalyzes the reversible phosphorolysis of thymidine and other pyrimidine 2′-deoxyribonucleosides. In addition, TP has been shown to possess angiogenic activity in a number of in vitro and in vivo assays, and its angiogenic activity has been linked to its catalytic activity. A series of 5- and 6-substituted uracil derivatives were synthesized and evaluated for their abilities to inhibit TP activity. Among the most active compounds was a 6-amino-substituted uracil analog, 6-(2-aminoethyl)amino-5-chlorouracil (AEAC), which was a competitive inhibitor with a Ki of 165 nM. The inhibitory activity of AEAC was selective for TP, as it did not inhibit purine nucleoside phosphorylase or uridine phosphorylase at concentrations up to 1 mM. Human recombinant TP induced human umbilical vein endothelial cell (HUVEC) migration in a modified Boyden chamber assay in vitro, and this action could be abrogated by the TP inhibitors. The actions of the inhibitors were specific for TP, as they had no effect on the chemotactic actions of vascular endothelial growth factor (VEGF). HUVEC migration was also induced when TP-transfected human colon and breast carcinoma cells were co-cultured in the Boyden chamber assay in place of the purified angiogenic factors, and a TP inhibitor blocked the tumor cell-mediated migration almost completely. These studies suggest that inhibitors of TP may be useful in pathological conditions that are dependent upon TP-driven angiogenesis.
Synthesis, physicochemical properties, and amide-oxidation reaction of indolequinone derivatives as model compounds of novel organic cofactor TTQ of amine dehydrogenases
Itoh,Takada,Ando,Haranou,Huang,Uenoyama,Oshiro,Komatsu,Fukuzumi
, p. 5898 - 5907 (2007/10/03)
3,4-Disubstituted 6,7-indolequinones [1,3-dimethyl]-4-(3'-methylindol- 2'-yl)indole-6,7-dione (2), 3-methyl-4-phenylindole-6,7-dione (3), and 3,4- dimethyl-6,7-dione (4)] and a 3,7-disubstituted 4,5-indolequinone [3,7- dimethylindole-4,5-dione (5)] have been synthesized as models for the novel organic cofactor TTQ bacterial amine dehydrogenases. The substituent and structural effects on the physicochemical properties of the quinones have been investigated in detail by comparing the spectroscopic data (UV-vis, IR, 1H- and 13C-NMR), pK(a) values of the pyrrole proton, and the two-electron redox potentials with those of model compound 1 [3-methyl-4-(3'-methylindol- 2'-yl)indole-6,7-dione] previously reported (ref 5). Reactivity of each quinone in the transamination process [iminoquinone formation (k1), rearrangement to product-imine (k2) and aminophenol formation (k3)] has been investigated kinetically, revealing that the substituent and structural effects on the amine-oxidation reaction are not significant. In the aerobic catalytic oxidation of benzylamine, however, the aromatic substituents on the quinone ring play an important role to protect the quinone from the deactivation process of a Michael-type addition by the amine, making it act as an efficient turnover catalyst.
Derivatives of 2-substituted-hydroxyanilino-hexahydro-2H-benzo[α]quinolizines
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, (2008/06/13)
2-Substituted-hydroxyanilino-hexahydro-2H-benzo[α]quinolizines of the structural formula, SPC1 In which R1 is a hydrogen atom or an alkanoyl group of 2 to 4 carbon atoms and each of substituents R2, R3, R4, R5, and R6 is a hydrogen atom, a hydroxyl, or a methyl group, such that at least one of the latter substituents is a hydroxyl group, exhibit coronary vasodilating activity.
