169378-52-3Relevant articles and documents
Spin crossover star-shaped metallomesogens of iron(II)
Seredyuk, Maksym,Munoz, M. Carmen,Ksenofontov, Vadim,Guetlich, Philipp,Galyametdinov, Yury,Real, Jose A.
, p. 8442 - 8454 (2014)
Three new types of spin crossover (SCO) metallomesogens of FeII based on symmetric tripod ligands and their magnetic and structural properties are reported here. These were obtained by condensation of tris(2-aminoethyl)amin (tren) with the aldehyde derived from 3-alkoxy-6-methylpyridine (mpyN, N (number of carbon atoms in n-alkyl chains) = 8, 18), 1-alkyl-1H-imidazole (imN, N = 4, 16, 18, 20, 22), or 1-alkyl-1H-benzimidazole (bimN, N = 6, 14, 16, 18, 20). A complex derived from 1-octadecyl-1H-naphtho[2,3-d]imidazole (nim18) retains the high spin state at any temperature. Single crystals of the short-chain complexes were investigated by a combination of X-ray crystallography, magnetic measurements and Moessbauer spectroscopy. Generally, in comparison with the short-chain complexes the long-chain complexes display more gradual SCO and undergo a phase transition crystal-liquid crystal that is reflected in their magnetic properties. Characterization by X-ray powder diffractometry and differential calorimetry reveal formation of a smectic mesophase upon melting.
Direct and Regioselective Introduction of Acetals into Imidazoles at the 2-Position by an Iridium-Catalyzed Reaction with Formates in the Presence of Hydrosilanes
Fukumoto, Yoshiya,Iyori, Yasuaki,Chatani, Naoto
, p. 1662 - 1665 (2017)
The iridium-catalyzed reaction of imidazoles with formates in the presence of hydrosilanes as coreactants led to the production of 2-[(alkoxy)(siloxy)methyl]imidazoles. Dimethyl acetylenedicarboxylate was the additive of choice for the reaction in terms of reaction efficiency. No reaction was observed in the absence of the hydrosilanes. Whereas substituents at the 1- and 5-positions on the imidazole ring did not affect the reaction, substituents at the 4-position greatly retarded the reaction. The regioselective reaction of 1-methyl-1,2,4-triazole occurred at the carbon atom between the sp3 and sp2 nitrogen atoms of the ring but not between two sp2 nitrogen atoms. The products were converted into imidazole 2-carbaldehydes by hydrolysis under acidic conditions.
CYCLIC AMINE DERIVATIVE AND PHARMACEUTICAL USE THEREOF
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Paragraph 0437; 0438, (2018/02/03)
An object of the present invention is to provide a compound exerting an analgesic effect against pain, in particular, neuropathic pain and/or fibromyalgia syndrome. The present invention provides a cyclic amine derivative represented by the following general formula, or a pharmacologically acceptable salt thereof.
Bioinspired nanophotosensitizers: Synthesis and characterization of porphyrin-noble metal nanoparticle conjugates
Bhaumik, Jayeeta,Gogia, Gitanjali,Kirar, Seema,Vijay, Lekshmi,Thakur, Neeraj S.,Banerjee, Uttam C.,Laha, Joydev K.
, p. 724 - 731 (2016/01/12)
A methodology to enhance biological delivery of photosensitizers by incorporating them into nanomaterials has been developed. In order to prepare photosensitizer nanoconjugates as biocompatible and selective probes, initially, bioconjugatable porphyrinic