| 摘要 |
Oxobenzofuranylidene-dihydroindolones of formulae trans-(Ia) and cis-(Ib)and of formulae trans-(IIa) and cis-(IIb)whereinA1 and A2 are each independently of the other unsubstituted or mono- to tetra-substituted ortho-C6-C18arylene, and R1 is hydrogen or an organic radical, with the proviso that when R1 is hydrogen and A2 is 1,2-phenylene, A1 is not 9,10-anthraquinon-1,2-ylene, 4-chloro-3,5-dimethyl-1,2-phenylene or 3,5-dimethyl-1,2-phenylene, processes for their preparation and the use thereof.
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