Syntheses and Chemical Properties of Heterocyclic Tetracyanodimethanes of a Heterocyclic N,N'-Dicyanodiimine and of Fully Substituted Monocyclic Tetracyanodimethanes

Article abstract of DOI:10.1002/hlca.19900730718

In the presence of different bases 4,8-diethoxy-3H,7H-benzo<1,2-c:4,5-c'>diisoxazole-3,7-dione (3) reacts with malonodinitrile or β-oxobenzenepropanenitrile to the coloured salts 4a,b and 5, respectively, which are alkylated to the tetracyanoquinodimethan