Stereoisomerization of cis-1,4-dihydro-1,4-dimethyl-1,4-diarsininetetracarboxylic acid diimides, which were prepared from cis-1,4-dihydro-1,4-diarsininetetracarboxylic acid dianhydride with n-dodecylamine or aniline, to trans-isomers in CDCl3 proceeded at room temperature and quantitatively by repeated concentration and dissolution process in various solvents such as CHCl3, toluene, and ethyl acetate. Two stereoisomers were isolated respectively as single crystals, of which structures were determined by X-ray crystallography.
Arylaminomaleimides as a New Class of Aggregation-induced Emission-active Molecules Obtained from Organoarsenic Compounds
作者:Takuji Kato、Kensuke Naka
DOI:10.1246/cl.2012.1445
日期:2012.11.5
Heating 1,4-dihydro-1,4-diarsininetetracarboxylic acid dianhydride with excess amounts of aniline and toluidine provided 3-anilino-N-phenylmaleimide and 3-p-toluidino-N-p-tolylmaleimide, respectively, which showed aggregation-induced emission (AIE) properties. Not only are the present aminomaleimide derivatives simple-structured AIE-active molecules, but they also exhibit pH responsive properties without introducing additional functional units.
Stereoisomerization of cis-1,4-dihydro-1,4-dimethyl-1,4-diarsininetetracarboxylic acid diimides, which were prepared from cis-1,4-dihydro-1,4-diarsininetetracarboxylic acid dianhydride with n-dodecylamine or aniline, to trans-isomers in CDCl3 proceeded at room temperature and quantitatively by repeated concentration and dissolution process in various solvents such as CHCl3, toluene, and ethyl acetate. Two stereoisomers were isolated respectively as single crystals, of which structures were determined by X-ray crystallography.