Abstract
(5,5-Diethyl-4,6-dioxo-tetrahydro-pyrimidin-2-ylidein)-thiourea and 1,3-Bis(5,5-diethyl-4,6-dioxo-tetrahydro-pyrimidin-2-ylidein)-thiourea were prepared by condensation of Thiourea with one equivalent and tow equivalent of 5,5-Diethyl-pyrimidine-2,4,6-trione. These Schiff-bas were reacted with one equivalent of maleic, succinic and phthalic anhydride in absolute ethanol to give 7-membered heterocyclic ring system of 3,3-Diethyl-2,4,8-tetraoxo-7-oxa-1,5,12-triaza-spiro [5.6]dodec-9-ene-12-carbothioic acid amide and were reacted with tow equivalent of maleic and succinic anhydride in same solvent give 2 (7-membered) heterocyclic ring system of 12-(3,3-Diethyl-2,4,8,11-tetraoxo-7-oxa-1,5,12-triaza-spiro [5.6] dodecane-12-carbothioyl)-3-ethyl-3-methyl-7-oxa-1,5,12-triaza-spiro [5.6]dodec-9-ene-2,4,8,11-tetraone. The final products were identified by there m.ps, elemental analyses, IR, 'HNMR and UV-Visible spectra..
Article Type
Article
How to Cite this Article
Al-Hity, Waleed F. and Al-Hadithi, Mohammed A.
(2006)
"Synthesis and Characterization of Oxazepine and Oxazepane from reaction of (5,5-Diethyl-4,6-dioxo-tetrahydro-pyrimidin-2-ylidein)-thiourea and 1,3-Bis(5,5-diethyl-4,6-dioxo-tetrahydro-pyrimidin-2-ylidein)-thiourea with maleic and Succinic anhydride,"
Baghdad Science Journal: Vol. 3:
Iss.
3, Article 19.
DOI: https://doi.org/10.21123/bsj.2006.731
