2018. Synthesis and Characterization of Oxazepine and Oxazepane from reaction of 2-(2- Amino - ethylimino)-5,5- diethyl-pyrimidine-4,6- dione and 2-[2-(5,5- diethyl -4,6 - dioxo - pyrimidine -2- ylideneamino) - ethylimino] -5,5- diethyl-dihydro- pyrimidine - 4,. Al-Nahrain Journal of Science. 9, 2 (Sep. 2018), 7–17.