Patent ID: 6503937
Filing Date: 2003-01-07
Classification: C07D

Abstract:
An oxobenzofuranylidene-dihydroindolone of formula trans-(Ia) or cis-(Ib) wherein A1 and A2 are each independently of the other unsubstituted or mono- to tetra-substituted 1,2-phenylene and R1 is hydrogen, C1-C25alkyl, C5-C12cycloalkyl, C6-C24aryl, a heteroaromatic radical, â€”(CH2)nâ€”COR2 or â€”(CH2)mâ€”OR3, wherein R2 is hydroxy, â€”OX, or, unsubstituted or mono- or poly-substituted by hydroxy, â€”OX or by amino, C1-C25alkoxy, C1-C25alkylamino or C1-C25dialkylamino, di(C6-C24aryl)amino, C1-C12alkyl, C2-C24alkenyl, and X is a cation, and R3 is hydrogen or â€”COâ€”(C1-C25alkyl), and n and m denote each independently of the other a whole number in the range from 0 to 6, and a single Câ€”C bond also may have been replaced by a corresponding ether unit, Câ€”Oâ€”C, with the proviso that, when R1 is hydrogen and A2 is 1,2-phenylene, A1 is not 4-chloro-3,5-dimethyl-1,2-phenylene or 3,5-dimethyl-1,2-phenylene.