- 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
Spectroscopic Study of the Metallation Reactions of Bis(dialkylamino)- 4-methyl-and 2,4-dimethyl-2,4-pentadienylboranes | ||
| Journal of Al-Nahrain University - Science | ||
| Article 1, Volume 16, Issue 1, 2013, Pages 21-27 | ||
| Author | ||
| Jawad K. Shneine | ||
| Abstract | ||
| Metalation Reactions of 2,4-dimethyl-and 4-methyl-2,4-pentadienylboranes, prepared from the reaction of potassium-2-methyl- and 2,4-dimethyl-1,3-pentadienide with chlorobis (dialkylamino) borane (R=Me, Et), were investigated. Lithiumdiethylamide LiNEt2 in THF was used as base to achieve metalation. Li(TMEDA*)-1-dimethylamino-3-methylboratabenzene and bora-2,4- and bora-2,5-cyclohexadiene were obtained from bis(dialkylamino)-4-methyl-2,4-pentadienylborane in moderate and good yields. Mass, 11B, 1H, 13C NMR spectroscopy were used to characterize the intermediates and products. Steric effects found to have dominating and controlling role on the results. | ||
| Keywords | ||
| Borabenzene; Boratabenzene; Boracyclohexadiene; Boron Heterocycles | ||
|
Statistics Article View: 50 PDF Download: 16 |
||