452-77-7Relevant academic research and scientific papers
Indium(III)-Catalyzed Reduction of Nitrobenzenes to Anilines: Scope and Limitations
Sakai, Norio,Asama, Shun,Konakahara, Takeo,Ogiwara, Yohei
, p. 3179 - 3185 (2015/10/19)
We have demonstrated that a combination of indium(III) iodide and 1,1,3,3-tetramethyldisiloxane (TMDS) effectively catalyzes the chemoselective reduction of nitrobenzenes with a variety of functional groups (halogens, alkyl, alkoxy, hydroxy, ester, amino, amide, cyanide, thiol, and an alkene moiety), producing the corresponding aniline derivatives.
An examination of the palladium/Mor-DalPhos catalyst system in the context of selective ammonia monoarylation at room temperature
Alsabeh, Pamela G.,Lundgren, Rylan J.,McDonald, Robert,Johansson Seechurn, Carin C. C.,Colacot, Thomas J.,Stradiotto, Mark
supporting information, p. 2131 - 2141 (2013/03/14)
An examination of the [{Pd(cinnamyl)Cl}2]/Mor-DalPhos (Mor-DalPhos=di(1-adamantyl)-2-morpholinophenylphosphine) catalyst system in Buchwald-Hartwig aminations employing ammonia was conducted to better understand the catalyst formation process and to guide the development of precatalysts for otherwise challenging room-temperature ammonia monoarylations. The combination of [{Pd(cinnamyl)Cl}2] and Mor-DalPhos afforded [(κ 2-P,N-Mor-DalPhos)Pd(η1-cinnamyl)Cl] (2), which, in the presence of a base and chlorobenzene, generated [(κ2-P,N- Mor-DalPhos)Pd(Ph)Cl] (1 a). Halide abstraction from 1 a afforded [(κ3-P,N,O-Mor-DalPhos)Pd(Ph)]OTf (5), bringing to light a potential stabilizing interaction that is offered by Mor-DalPhos. An examination of [(κ2-P,N-Mor-DalPhos)Pd(aryl)Cl] (1 b-f) and related precatalysts for the coupling of ammonia and chlorobenzene at room temperature established the suitability of 1 a in such challenging applications. The scope of reactivity for the use of 1 a (5 mol %) encompassed a range of (hetero)aryl (pseudo)halides (X=Cl, Br, I, OTs) with diverse substituents (alkyl, aryl, ether, thioether, ketone, amine, fluoro, trifluoromethyl, and nitrile), including chemoselective arylations. Copyright
NOVEL CATALYSTS
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Page/Page column 61-62, (2012/06/01)
The present invention provides novel compounds and ligands that are useful in transition metal catalyzed cross-coupling reactions. For example, the compounds and ligands of the present invention are useful in palladium or gold catalyzed cross-coupling reactions.
A P,N-Ligand for palladium-catalyzed ammonia arylation: Coupling of deactivated aryl chlorides, chemoselective arylations, and room temperature reactions
Lundgren, Rylan J.,Peters, Brendan D.,Alsabeh, Pamela G.,Stradiotto, Mark
supporting information; experimental part, p. 4071 - 4074 (2010/07/05)
(Figure Presented) Amazing ammonia: A new air-stable P,N-ligand (Mor-DalPhos) is reported that enables the palladium-catalyzed crosscoupling of ammonia to a variety of aryl chloride and aryl tosylate substrates with high chemoselectivity and, for the first time, at room temperature (see scheme; Ad = adamantyl, Ts=para-toluenesulfonyl).
Highly efficient solvent-free catalytic hydrogenation of solid alkenes and nitro-aromatics using Pd nanoparticles entrapped in aluminum oxy-hydroxide
Chang, Fei,Kim, Hakwon,Lee, Byeongno,Park, Sungho,Park, Jaiwook
experimental part, p. 4250 - 4252 (2010/09/07)
Solid alkenes and aromatic nitro compounds are readily hydrogenated to the corresponding alkanes without further reduction of other functional group and amino compounds in nearly quantitative yields in the presence of Pd nanoparticles entrapped in aluminum oxy-hydroxide under the solvent-free condition.
Electrophilic aromatic fluorination with fluorine: meta-Directed fluorination of anilines
Alric,Marquet,Billard,Langlois
, p. 661 - 667 (2007/10/03)
Anilines are mainly or selectively fluorinated in the meta-position with F2 when dissolved in triflic acid, sometimes in the presence of small quantities of antimony pentafluoride. The regioselectivity is increased when an electron-donating substituent is present at the para-position.
Analogues of camptothecin, their use as medicaments and the pharmaceutical compositions containing them
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, (2008/06/13)
A compound of the formula wherein the substituents are defined as in the specification which compounds are useful in the treatment of cancer.
New analogues of camptothecin, their use as medicaments and the pharmaceutical compositions containing them
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, (2008/06/13)
A compound of the formula wherein the substituents are defined as in the specification which compounds are useful in the treatment of cancer.
Chemoselective reduction of aromatic nitro and azo compounds in ionic liquids using zinc and ammonium salts
Khan, Faiz Ahmed,Dash, Jyotirmayee,Sudheer,Gupta, Rakesh Kumar
, p. 7783 - 7787 (2007/10/03)
Nitroarenes were chemoselectively reduced to the corresponding amines using zinc and aqueous ammonium salts in ionic liquids as a safe and recyclable reaction medium. Our results specify the effect of ammonium salts in the process; the combination of Zn/NH4Cl in [bmim][PF6] or Zn/HCO2NH4 in [bmim][BF4] were the suitable conditions for the reduction of nitroarenes. Azobenzenes were also smoothly reduced to hydrazobenzenes with Zn/HCO2NH4 (aq.) in recyclable [bmim][BF4] without any over reduction to the corresponding anilines.
Position 7 substituted indenyl-3-acetic acid derivatives and amides thereof for the treatment of neoplasia
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, (2008/06/13)
In position 7 substituted indenyl-3-acetic acid derivatives and pharmaceutically acceptable salts and amides thereof have anti-neoplastic activity.
