Abstract
A number of substituted 2-(N, N-diethyl-p-quinonediimine)indazolones have been synthesized, and their optical properties investigated. It has been shown that introduction of electrophilic substituents into the benzene ring of an indazolone gives rise to a bathochromic shift in the absorption spectra of 2-(N, N-diethyl-p-quinonediimine)indazolones in alcohol and benzene solution.
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References
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B. D. Chernokal'skii, A. T. Groisberg, Ya. A. Levin, I. I. Levkoev, I. A. Solov'eva, M. I. Barro, and V. A. Kukhtin, Trudy NIKFI, 37, 39, 1960.
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Chernokal'skii, B.D., Groisberg, A.T. & Bezdenezhnaya, A.A. Synthesis and color of 2-(N, N-diethyl-p-quinonediimine)-indazolones. Chem Heterocycl Compd 1, 275–277 (1966). https://doi.org/10.1007/BF00473610
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DOI: https://doi.org/10.1007/BF00473610