- 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
Microwave Assisted Synthesis of some New Chromene Derivatives | ||
| Rafidain Journal of Science | ||
| Article 6, Volume 21, Issue 2, 2010, Pages 44-52 PDF (0 K) | ||
| DOI: 10.33899/rjs.2010.38319 | ||
| Author | ||
| Shaymaa K. Younis | ||
| Abstract | ||
| An efficient synthesis of some new 4-(benzo [d] -1,3-dioxo-5-yl)-[2,3-c]-N-aryl pyrolo-1,3-dione-3,4,5,6-tetrahydro-2H-benzo[h] chromene derivatives (4a-h) via Diels-Alder reaction of 2-piperonylidene-1- tetralone (1) and N- aryl maleimides (3a-h) under microwave irradiation was described. The yield have been improved (- 84 92%) and the reaction time reduced from hours to few minutes through the use of dichloromethane as solvent and aluminum chloride as catalyst. All prepared compounds were confirmed by the available physical and spectral methods. | ||
| Keywords | ||
| chromene derivatives; Microwave irradiation; Diels; Alder reaction | ||
|
Statistics Article View: 491 PDF Download: 290 |
||