52625-67-9Relevant academic research and scientific papers
BENZOAZOLE COMPOUND OR SALT THEREOF, AND PIGMENT COMPOSITION CONTAINING THE SAME
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Paragraph 0043, (2019/01/06)
PROBLEM TO BE SOLVED: To provide a composition stable as a colorant of e.g., a resist for color filters, where a pigment composition containing an organic pigment is reduced in particle size and increased in concentration without causing aggregation, sedimentation, or a viscosity increase with time. SOLUTION: The present invention provides a benzoazole compound having a structure represented by a formula (1) or a salt thereof (where, R1-R8 are ahydrogen atom, a C1-4 alkyl group, a C1-4 alkoxy group, a halogen atom, a -CO2M group or a -SO3M group. M is a hydrogen atom, an alkali metal atom, an alkaline earth metal atom or a -NZ1Z2Z3Z4 group. Z1-Z4 are a hydrogen atom, a C1-4 alkyl group or the like. X is an oxygen atom or a sulfur atom or the like). SELECTED DRAWING: None COPYRIGHT: (C)2019,JPOandINPIT
β-Diceto enamines heterocycliques: 1. Indanediones-1,3 substituees en 2 par un heterocycle azote
Ploquin, J.,Sparfel, L.,Baut, G. Le,Floc'h, R.,Letourneux, Y.
, p. 961 - 973 (2007/10/02)
The condensation of methylated N-heterocycles and especially monomethyl- and polymethylpyridines on phthalic anhydrides leads to 2-aryl-1,3-indanediones.The 3-alkylidenylphthalides formed in an intermediary state have been isolated.The influence of solvents and temperature on the velocity and yield of formation of 2-(2- and 4-pyridyl)-1,3-indandiones has been studied.The ir and nmr spectra confirm that these compounds exist under a β-diketoenamine form resonating with a betaine form.
