Syntheses with Nitriles, LXXX. Dicyanomethylenepyrazolinones and Their Chromophoric Properties

DOI: 10.1007/BF00810108

Source and publish data:

Monatshefte fur Chemie p. 993 - 1010 (1988)

Update date:2022-07-29

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Authors:

Junek, Hans

Klade, Manfred

Sterk, Heinz

Fabian, Walter

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Article abstract of DOI:10.1007/BF00810108

1-Phenyl-2-pyrazolin-5-ones 1a-e react with tetracyanoethylene forming the corresponding dicyanomethylenepyrazolin-5-ones 2a-e.The products are deeply coloured with absorption bands between 550 and 650 nm, but low ε-values and negative solvatochromic effe

Full text of DOI:10.1007/BF00810108

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