14331-27-2Relevant academic research and scientific papers
1,2-Dibenzoyl- and 1-benzoyl-2-acetylhydrazines as reagents for recovering Cu(II) ions from alkaline solutions
Radushev,Chekanova,El'chishcheva,Ershova
, p. 368 - 371 (2007)
The conditions of complexation of 1,2-diacylhydrazines (H2L) C6H5C(O)NHNHC(O)R, where R = C6H5 or CH3, with Cu(II) ions in alkaline solutions were studied. The composition of the complexes formed by precipitation of Cu(II) from alkaline solutions, (CuOH)2L and CuL, was determined. The possibility of afterpurification of solutions with a low Cu(II) content by pneumatic flotation using H2L was examined.
Photochemical reactions of metamitron
Palm,Millet,Zetzsch
, p. 1117 - 1130 (1997)
Photochemical reactions of metamitron (a 4-amino substituted as-triazin-5(4H)-one) were investigated including UV- and phosphorescence spectroscopy, determination of quantum yields, comparison with measurements in sunlight and products found. The photolys
METAL COMPLEX, COMPOSITION AND LIGHT EMITTING DEVICE
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Paragraph 0601-0605, (2019/07/03)
A metal complex represented by formula (1) is provided. In formula (1), X represents a nitrogen atom or a group represented by ═C(RX)—; R1 represents an alkyl group having 4 or more carbon atoms; R2 represents an alkyl, cycloalkyl, alkoxy, cycloalkoxy, aryl, aryloxy, monovalent heterocyclic, or substituted amino group or a halogen atom; rings A and B each independently represent an aromatic hydrocarbon ring or an aromatic heterocyclic ring; M represents a rhodium, palladium, iridium, or platinum atom; n1 represents an integer of 1 or more, n2 represents an integer of 0 or more, and n1+n2 is 2 or 3; A1-G1-A2 represents an anionic bidentate ligand; A1 and A2 each independently represent a carbon atom, an oxygen atom, or a nitrogen atom; and G1 represents a single bond or an atomic group constituting a bidentate ligand together with A1 and A2.
Pd-catalyzed oxidative annulation of hydrazides with isocyanides: Synthesis of 2-amino-1,3,4-oxadiazoles
Fang, Tao,Tan, Qitao,Ding, Zhengwei,Liu, Bingxin,Xu, Bin
supporting information, p. 2342 - 2345 (2014/05/20)
An efficient palladium-catalyzed oxidative annulation reaction was developed through sequential isocyanide insertions into N-H and O-H bonds of hydrazides, which provides an efficient access to valuable 2-amino-1,3,4- oxadiazoles and their derivatives.
Synthesis of 1,3,4-oxadiazoles from 1,2-diacylhydrazines using [Et 2NSF2]BF4 as a practical cyclodehydration agent
Pouliot, Marie-France,Angers, Laetitia,Hamel, Jean-Denys,Paquin, Jean-Francois
supporting information; experimental part, p. 988 - 993 (2012/04/10)
The preparation of 1,3,4-oxadiazoles from 1,2-diacylhydrazines using XtalFluor-E ([Et2NSF2]BF4) as cyclodehydration reagent is described. Various functionalized 1,3,4-oxadiazoles were synthesized and it was found that the use of acetic acid as an additive generally improved the yields.
Reactivity of benzohydrazide derivatives towards acetylation reaction. Experimental and theoretical studies
Campodónico, Paola R.,Aliaga, Margarita E.,Santos, José G.,Castro, Enrique A.,Contreras, Renato
scheme or table, p. 86 - 89 (2010/06/11)
We herein report an experimental and theoretical study on the acetylation reaction of benzohydrazide derivatives towards p-nitrophenyl acetate (NPA). The kinetic data are consistent with a stepwise mechanism with the nucleophilic attack as the rate determining step. From the theoretical analysis it is found that benzohydrazide derivatives establish intramolecular proton rearrangement. The enol form appears as the active species for nucleophilic attack. A reaction mechanism incorporating keto-enol pre-equilibria is proposed. The study is completed with a local reactivity analysis describing the most reactive centers for nucleophilic attack together with a site activation analysis describing inductive substituent effects.
MAOS protocols for the general synthesis and lead optimization of 3,6-disubstituted-[1,2,4]triazolo[4,3-b]pyridazines
Aldrich, Leslie N.,Lebois, Evan P.,Michelle Lewis,Nalywajko, Natalia T.,Niswender, Colleen M.,David Weaver,Jeffrey Conn,Lindsley, Craig W.
scheme or table, p. 212 - 215 (2009/05/07)
General, high-yielding MAOS protocols for the expedient synthesis of functionalized 3,6-disubstituted-[1,2,4]triazolo[4,3-b]pyridazines are described amenable to an iterative analog library synthesis strategy for the lead optimization of an M1 antagonist
Near-infrared-absorbing organic electrochromic materials
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Page/Page column 7, (2008/12/07)
The invention provides generally a new type of organic electrochromic Near Infrared (NIR)-active materials capable of absorbing and attenuating the light in the NIR region around 1550 nm and forming thin films on electrodes for variable optical attenuator
4-Oxa and 4-thia steroids
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, (2008/06/13)
The compounds of the present invention are those of structural formula (I) STR1 wherein X is oxygen or sulfur. Pharmaceutical compositions and methods of use of the compounds in the treatment of hyperandrogenic conditions are disclosed. In addition, the combination of the compounds with other active agents such as finasteride, minoxidil and retinoic acid or a derivative thereof is disclosed.
