2-Dicyanomethylene-3-cyano-2,5-dihydrofuran

Dicyanomethylene-3-cyano-2,5-dihydrofuran (2,4,7-Trinitrofluorene-9-ylidene)-malononitrile j3, j3 -Diacetyl-4-methoxystyrene... 

A recent report detailed the synthesis and applications of a series of dicyanomethylene-substituted dihydrofurans 58 <2005USP2005009109>. All the fluorophoric compounds contained a 2-dicyanomethylen-3-cyano-2,3-dihydro-furan moiety and at least one donor group conjugated to the dihydrofuran ring. The donor group most often contained an aryl spacer with a substituted donor atom, such as N, O, S, or P, in the /> ra-position of the aryl substituent. These... 

Figure 8.15 The chemical structure of 2-dicyanomethylen-3-cyano-5,5-dimethyl-4-(4 -dihexylaminophenyl)-2,5-dihydrofuran (DCDH F-5).

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