22509-02-0Relevant articles and documents
MANUFACTURING METHOD OF 1-SUBSTITUTED IMIDAZOLE COMPOUND
-
Page 4, (2010/02/11)
PROBLEM TO BE SOLVED: To provide a high-yield manufacturing method of a 1-substituted imidazole compound which is expected to be useful as a curing agent for epoxy resins, polyurethane resins or the like, as an intermediate of various agrochemicals, antibiotics or pharmaceuticals such as anti-AIDS agents or the like, or as dye intermediates. SOLUTION: An aldehyde compound is reacted with a primary amine to give an imine compound, and subsequently an α,β-dicarbonyl compound and ammonia are added and allowed to react with the imine compound. Preferably, the α,β-dicarbonyl compound and ammonia are simultaneously added.
Substituent Effects on the n and ? Molecular Orbitals of Methanimines. Photoelectron Spectra and Electronic Structures of Some Aliphatic Non-conjugated Diimines with Implications for Their Photochemistry
Bittner, Andreas J.,Rademacher, Paul
, p. 555 - 580 (2007/10/02)
The electronic structures of methanimine (1) and all possible methyl-, trifluoromethyl-, methoxy-, fluoro-, and chloro-substituted methanimines (2) - (26) have been studied by semiempirical quantum chemical calculations with special consideration of the energies of the two highest occupied molecular orbitals.By the same methods, the non-conjugated dimines (27a) - (30c) with one to four methylene groups separating the imino functions and different numbers of methyl groups have been investigated.The linear dialdimines (31) - (33) and diketimines (34) - (36)of 1,2 diaminoethane, 1,3 diaminopropane, and 1,4 diaminobutane have been prepared and characterized.The electronic structures of these compounds have been studied by photoelectron spectroscopy and semiempirical quantum chemical calculations.Acording to these results, photochemical -cycloadditions of alkyl-substituted imines are unlikely to occur.Photolysis of the diimines (31), (32), (34), and (35) only in the presence of a Lewis acid afforded products of Norrish type I reactions.