New Electron Acceptors: Synthesis, Electrochemistry, and Radical Anions of N,7,7-Tricyanoquinomethanimines and X-ray Crystal Structures of the Trimethyl and Tetramethyl Derivatives

Article abstract of DOI:10.1021/jo00032a017

The reaction of a range of quinones 3 with malononitrile in the presence of titanium tetrachloride/pyridine yields dicyanoquinomethides 4, which on reaction wit N,N'-bis(trimethylsilyl)carbodiimide are converted into the corresponding N,7,7-tricyanoquinom