Patent ID: 6468406
Filing Date: 2002-10-22
Classification: C07C,C07D

Abstract:
An anion-complexing compound with the formula I wherein R1 is selected from the group consisting of formulas II and III wherein any one of the rings of formulas II and III may be substituted with 1 to 3 R2 groups, wherein R2 is alkyl or alkoxy and may be the same or different from each other; wherein Yâ€² is â€”NHC(X)NHâ€”; wherein Yâ€³ is selected from the group consisting of â€”NHC(Xâ€²)â€”, â€”C(Xâ€²)NHâ€”, and â€”NHC(Xâ€²)NHâ€”; wherein X and Xâ€², independently of one another, is a sulphur or oxygen atom; wherein any one of the rings of formula I may be substituted with 1 or 2 R3 groups, wherein R3 is, independently of each other, alkyl, alkoxy, NO2, or a halide, wherein halide is selected from the group consisting of flourine and chlorine; and wherein R4 and R4â€² are either a) identical, representing aryl that may be unsubstituted or may be substituted with 1 or 2 R3 groups, an alkyl, an acyl or an aryl sulphonyl, which may be unsubstituted or may be substituted with 1 or 2 R3 groups; or b) together form formula V wherein the ring of formula V may be substituted with 1 or 2 R3 groups, or an alkyl group with the formula â€”(CH2)nâ€”, wherein n is 2 to 6.