Chemistry other pyrimidoazepines

Diazabicycloundecene (DBU) and other pyrimidoazepines, chemistry of, 42, 83 Diazepines, chemistry of, 8, 21... 

In the first part of the section on the pyrimido[l,2-a]azepines, the chemistry of 2,3,4,6,7,8,9,10-octahydropyrimido[l,2-a]azepine (8) (generally called diazabicyclo[5.4.0] undec-7-ene, or DBU) is treated in a separate subsection, since DBU has proved to be a useful reagent in synthetic organic chemistry and an important catalyst in the synthesis of macromolecules. Since the appearance of two early reviews (72S591 75MI5), the applications of DBU have rapidly increased because of its favorable nonnucleophilic, yet strongly basic, properties. It can therefore be applied for the preparation of even relatively sensitive molecules. Following this, the synthesis, reactions, physicochemical properties, and briefly the applications of further pyrimido[l,2-a]azepine derivatives are discussed. The treatment of the chemistry of the other pyrimidoazepines (2-5 and 7) follows an essentially identical pattern to that for the pyrimido[l,2-a]azepines. 

Hermecz, I., Chemistry of Diazabicycloundecene (DBU) and Other Pyrimidoazepines, 42, 83. Hermecz, I., Keresturi, G., Vasvari-Debreczy, L., Aminomethylenemalonates and Their Use in Heterocyclic Synthesis, 54. 

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