90841-81-9

Upstream product

• 1442447-48-4 3,4-dibromo-2,5-dioxo-2,5-dihydro-pyrrole-1-carboxylic acid methyl ester 
• 108-91-8 cyclohexylamine 
• 1631-25-0 N-cyclohexylmaleimide 
• 1228144-40-8 N-cyclohexyl-α-bromomaleimide 
• 24564-83-8 C₁₀H₁₅NO₃ 

Downstream Products

• 1316216-67-7 2,3-bis(biphenyl-4-yl)-N-cyclohexylmaleimide 
• 62448-61-7 1-cyclohexyl-3,4-diphenyl-1H-pyrrole-2,5-dione 
• 1316216-63-3 2,3-bis(thiophen-2-yl)-N-cyclohexylmaleimide 

Relevant academic research and scientific papers

Electrochemical synthesis method of 3,4-dibromomalayimide

The present invention relates to the field of organic synthesis technology, in particular to a 3,4-dibromo maleimide electrochemical synthesis method, maleimide as the starting material, to inexpensive, safe and readily available bromide as a bromine sour

A mild synthesis of N-functionalised bromomaleimides, thiomaleimides and bromopyridazinediones

Bromomaleimides are useful building blocks in synthesis and powerful reagents for the selective chemical modification of proteins. A mild new synthesis of these reagents is described, along with the convenient transferability of the approach to dithiomale

Synthesis and fluorescent properties of conjugated copolymers containing maleimide and fluorene units at the main chain

Yamamoto or Suzuki-Miyaura coupling polymerizations of 2,3-diiodo-N- cyclohexylmaleimide with fluorene derivatives (2,7-dibromo-9,9′- dihexylfluorene and 9,9′-dihexylfluorene-2,7-diboronic acid) were carried out. The number-average molecular weights (Mn) of the resulting copolymers were 2600-3500 by gel permeation chromatography analysis. The fluorescence emission of the alternating copolymer showed the emission maxima at 551 nm in THF. On the other hand, the random copolymers showed the bimodal emission peaks at 418-420 and 555-557 nm region, respectively. The fluorescence peaks of the random copolymers on the long wavelength region (555-557 nm) were attributed to the conjugated neighboring N-cyclohexylmaleimide-9,9′- dihexylfluorene units in the polymer main chain. Furthermore, the copolymers exhibited the fluorescence solvatochromism by the difference of the polarity of solvents. The alternating and random copolymers showed the different fluorescence solvatochromism, and the emission colors are distinguishable by the naked eye, respectively. Copyright

Synthesis and fluorescent properties of model compounds for conjugated polymer containing maleimide units at the main chain

2,3-Diaryl substituted maleimides as model compounds of conjugated maleimide polymers [poly(RMI-alt-Ar) and poly(RMI-co-Ar)] were synthesized from 2,3-dibromo-N-substituted maleimide (DBrRMI) [R= cyclohexyl (DBrCHMI) and n-hexyl (DBrHMI)] and aryl boronic acid using palladium catalysts. To clarify structures of conjugated polymer containing maleimide units at the main chain, 13C NMR spectra of 2-aryl or 2,3-diaryl substituted maleimides were compared with those of N-substituted maleimide polymers. Copolymers obtained with DBrRMI via Suzuki-Miyaura cross-coupling polymerizations or Yamamoto coupling polymerizations were dehalogenated structures at the terminal end. This dehalogenation may contribute to the low polymerizability of DBrRMIs. On the other hand, the π-conjugated compounds showed high solubility in common organic solvents. The N-substituents of maleimide cannot significantly affect the photoluminescence spectra of 2,3-diaryl substituted maleimides derivatives. The fluorescence spectra of poly(RMI-alt-Ar) and poly(RMI-co-Ar) varied with N-substituents of the maleimide ring. When exposed to ultraviolet light of wavelength 352 nm, a series of 1,4-phenylene- and/or 2,5-thienylene-based copolymers containing N-substituted maleimide derivatives fluoresced in a yellow to blue color. It was found that photoluminescence emissions and electronic state of π-conjugated maleimide derivatives were controlled by aryl- and N-substituents, and maleimide sequences of copolymers.