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Imidazole

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imidazole [‚imĀ·ə′da‚zōl]
(organic chemistry)
C3H4N2One of a group of organic heterocyclic compounds containing a five-membered diunsaturated ring with two nonadjacent nitrogen atoms as part of the ring; the particular compound imidazole is a member of the group.

Imidazole 

(glyoxaline, 1,3-diazole) a heterocyclic base. Colorless crystals; boiling point, 256°C. Imidazole is readily soluble i n water and alcohol and moderately soluble in ether. It is aromatic, that is, readily undergoes halogenation, nitration, and sulfonation. The hydrogen of the NH group can be replaced by alkyl by the action of, for example, dimethylsulfate. Imidazole is prepared by reacting glyoxalwith ammonia and formaldehyde. Its derivatives (histamin, histidine, carnosine, pilocarpine) are widely distributed in the animal and plant worlds and have important biological significance. [10–416-6 ]



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00 Hardcover QD474 The longest paper in this collection shows how the intermediate spin state in iron(III) porphyrin complexes can be increased in six coordinate mixed systems and in the cytochrome c' model where only one imidazole molecule coordinates to the iron(III) ion.
In the PABZ the imidazole ring conjugate with two benzene rings, the charge transfer from amino nitrogen to conjugate system, which results in the decrease of the charge density in amino nitrogen, so the reactivity of PABZ is lower than that of ODA.
has obtained a patent for a method for forming an acrylic emulsion comprised of emulsion copolymerization of monomers comprised of an acrylic monomer having an epoxy group, an acrylic monomer having a hydroxyl group using a reactive emulsifier having an unsaturated double bond in the molecule and a polymerization initiator having an imidazole group and/or an imidazoline group in the presence of a silane compound having an epoxy group and an alkoxy group in the molecule.
 
 
 
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