- All Journals
- Al-Qadisiyah University
- Basrah University
- Kirkuk University
- Mosul University
- The Iraqi Borad for Medical Specialization
- University of Anbar
- University of Technology
- Al Mustafa University
- Al-Zahraa University for Women
- Alnoor University
- Kunooz University
- Misan University
- Ninevah University
- Tikrit University
- University of Al-Hamdaniya
- University of Kerbala
Synthesis and Characterization of Oxazepine and Oxazepane from reaction of (5,5-Diethyl-4,6-dioxo-tetrahydro-pyrimidin-2-ylidein)- urea and 1,3-Bis(5,5-diethyl-4,6-dioxo-tetrahydro-pyrimidin-2-ylidein)- urea with maleic and Succinic anhydride. | ||
| Iraqi National Journal Of Chemistry | ||
| Article 1, Volume 0, Issue 23, 2014, Pages 405-417 | ||
| Authors | ||
| Waleed.F. Al-Hity; Mohammed A.Al-Hadithi | ||
| Abstract | ||
| Abstract (5,5-Diethyl-4,6-dioxo-tetrahydro-pyrimidin-2-ylidein)-urea and 1,3-Bis(5,5-diethyl-4,6-dioxo-tetrahydro-pyrimidin-2-ylidein)- urea were prepared by condensation of urea with one equivalent and two equivalent of 5,5-Diethyl-pyrimidine-2,4,6-trione. These Schiff-bases reacted with one equivalent of maleic and succinic 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-carboxylic acid amide and were reacted with two equivalent of maleic and succinic anhydride in same solvent give doubled (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-carbonoyl)-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, 1HNMR and UV-Visible spectra. | ||
|
Statistics Article View: 168 PDF Download: 102 |
||