645402-19-3

Upstream product

• 89-98-5 2-chloro-benzaldehyde 
• 538-39-6 1,2-di-p-tolylethane 
• 3457-48-5 1,2-di(4-methylphenyl)-1,2-ethanedione 

Downstream Products

• 645402-18-2 2,2'-bis(2-chlorophenyl)-4,4'-5,5'-tetrakis(4-methylphenyl)-1,2'-biimidazole 

Relevant academic research and scientific papers

Facile fabrication of porous magnetic covalent organic frameworks as robust platform for multicomponent reaction

The design of cheap yet efficient nanoporous magnetic catalysts for the environmentally benign process's widespread application is an extremely attractive, challenging chemical research field. A novel porous magnetic covalent organic framework was prepared by the condensation reaction of melamine and terephthaladehyde on the surface of 3,4-dihydroxybenzaldehyde coated magnetic Fe3O4 nanoparticles COF@Fe3O4 under hydrothermal conditions for the first time. The high surface area magnetic COF could exhibit superior catalytic activity for sustainable synthesis of trisubstituted and tetrasubstituted imidazoles and pyrroles in good to excellent yields in PEG as solvent under environmentally friendly, ambient conditions and making the overall process economical, efficient, and green. The retrievable catalyst in PEG is general and applicable to a broad substrate scope and functional group compatibility. The structure and morphology of the COF@Fe3O4 were characterized by FTIR, XRD, EDX, and SEM spectroscopy. The COF@Fe3O4 magnetic catalyst was recovered by an external magnet and used for several cycles without significant catalytic activity loss.

THIOL COMPOUND AND PHOTOSENSITIVE COMPOSITION USING THE SAME

The present invention relates to a thiol compound represented by formula (1) : wherein R1, R2 and n have the same meanings as in the specification, method for producing the compound, and to a photosensitive composition and a black matrix resist composition using the same which have high sensitivity and excellent property of retaining a line width in fine line patterns at the time of alkaline development, that is, being excellent in development latitude.

THIOL COMPOUND, AND PHOTOSENSITIVE COMPOSITION AND BLACK MATRIX RESIST COMPOSITION USING THE COMPOUND

The invention is related to a thiol compound represented by formula (1), production method thereof, and a photosensitive composition and a resist composition for black matrix for color filters which use the thiol compound and are excellent in sensitivity and can keep the line width in patterns unchanged, i. e. attain an excellent developing latitude. (All the symbols have the same meanings as defined in the Description.)

Room temperature ionic liquid promoted improved and rapid synthesis of 2,4,5-triaryl imidazoles from aryl aldehydes and 1,2-diketones or α-hydroxyketone

An improved and rapid one-pot synthesis of 2,4,5-triaryl imidazoles in a room temperature ionic liquid is described, which does not need any added catalyst. Different ionic liquids based on 1-n-butyl and 1,3-di-n-butyl imidazolium salts were screened and their efficacy in terms of acidity and polarity have been correlated with yields and reaction period. The one-pot methodology resulting in excellent isolated yields in short reaction times is characterized by simple work up procedures and efficient recovery and recycling of the ionic liquid, which acts as a promoter.

HEXAARYLBIIMIDAZOLE COMPOUNDS AND PHOTOPOLYMERIZATION INITIATOR COMPOSITIONS CONTAINING THE SAME

The present invention provides a novel hexaarylbiimidazole compound of the following formula (1): wherein each R1 represents a halogen, and each R2 represents an optionally substituted C1-4 alkyl group. The hexaarylbiimida