Aa. Bakibayev et al., METHODS FOR THE SYNTHESIS OF NITROGEN-CONTAINING HETEROCYCLES USING UREAS AND RELATED-COMPOUNDS, Uspehi himii, 67(4), 1998, pp. 333-352
Numerous experimental data on the use of ureas in the syntesis of vari
ous mono- and bicyclic nitrogen containing heterocycles excluding pyri
midines and hydantoins are summarised. The methods for the synthesis o
f phthalocyanines, diazepines and diazocines based on urea and its der
ivatives are also considered.