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.
An efficient Cu(OAc)2/Ag2CO3-cocatalyzed approach for the synthesis of 3-aminomaleimides and 3-amino-4-indolylmaleimides has been developed with satisfactory yields. A series of primary and secondary amines are compatible with this reaction. In addition, treatment of maleimides with primary amines using 1 equiv. of CuCl2 leads to the formation of chloroamination products such as 3-amino-4-chloromaleimides