ChemInform Abstract: DIE SYNTHESE UND DIE UNTERSUCHUNG EINIGER BISBENZIMIDAZOLOCHINAZOLINE

Abstract

Aus o‐Nitranilin (I) oder o‐Phenylendiamin (VI) wird auf drei verschiedenen Wegen das Aminophenylbenzimidazol (V) hergestellt.

11H-isoindolo[2,1-a]benzimidazoles (Review)

“…A series of dyes have been synthesized on the basis of reaction of the diamine 1a with nitro-and acylamino [82,104], hydroxy [104], tetrachloro [105][106][107], and tetrabromo [34,108,109] derivatives of phthalic anhydride. The bisproducts from the condensation of 3,3'-diaminobenzidine with phthalic anhydride [110] and of pyromellitic anhydride with ophenylenediamine [111] and bisproducts of type 37 (R = H [40] or R = NO 2 [41]) can be used as dyes (see section 1.2.1). An azo dye based on 11H-7-amino-2-chloroisoindolo[2,1-a]benzimidazol-11-one is known [112].…”

“…Compounds 36a-c with two isoindolo[2,1-a]benzimidazole residues separated by a single bond, an oxygen atom, or a CH 2 group were synthesized by the condensation of the anhydride 28b with the tetraamines 13a-c [39,40]. Similar products of type 37 were obtained from the dianhydride 38 and the diamines 1a,e [41,42].…”