Structure, synthesis and application of azines: a historical perspective

The present review provides a general survey of the chemistry of 2,3-diaza-1,3-butadienes (azines). We first briefly describe azines and then discuss the literature concerning the synthesis, properties, applications, and reactivity of these compounds. Finally, we illustrate their relevance and examine their organometallic chemistry. Such detailed survey of the broad chemical aspects of azine derivatives seems appropriate, as it has not previously been provided.