Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
Molbank 2004 1 von 1 http://www.mdpi.org/molbank/molbank2005/m398.htm http://www.mdpi.net/molbank/ Molbank 2005, M398 ’, ’ bis[(3,5 dimethyl 1 pyrazolyl)methyl], , dimethyl para phenylenediamine. Ibrahim Bouabdallah*, Ismail Zidane, Rachid Touzani and Abdelkrim Ramdani Laboratoire de Chimie Organique Physique, Département de Chimie, Faculté des Sciences, Université Mohamed Premier, BP 524, 60000, Oujda, Maroc e0mail : Bouabdallah@sciences.univ0oujda.ac.ma. ra@sciences.univ0oujda.ac.ma Received: 18 March 2004 / Accepted: 25 March 2004 / Published: 1 July 2005 Keywords: pyrazol, ligand. The mixture of N,N0dimethyl0para0phenylenediamine 2 (136 mg, 10 mmol) and 10hydroxy0methyl0 3,50dimethylpyrazol 1 (252 mg, 20 mmol) in CH3CN (20 mL), was stirred at room temperature for five days[1, 2]. The organic layer was dried over Na2SO4, filtered and concentrated at reduced pressure. The residue was purified by recrystallysation in dichloromethane0diethylether to give product 3 as a black solid (300 mg, 85 %). Melting point: 88090 °C (dichloromethane0diethylether: 1/1). IR (KBr, cm01): 2990 (CH3); 1580 (C=C); 1510 (C=N). 1 H0NMR (300 MHz, CDCl3): δ= 6.68 (2H, d, H1, J = 8.9 Hz); 6.53 (2H, d, H2, J = 8.9Hz); 5.68 (2H, s, CH pyrazolyl); 5.30 (4H, s, CH2); 2.83 (6H, s, N0CH3); 2.19 (6H, s, CH3); 1.85 (6H, s, CH3). 13 C0NMR (300 MHz, CDCl3): δ= 148.63; 147.96; 140.23; 136.38; 126.32; 113.59; 106.74; 66.15; 41.22; 13.96; 11.18. EI0MS (70 eV, m/z): 352; 243; 215; 148; 109; 96; 77; 54; 42. References and otes: 1. Driessen, W. J. R.. "eth. Chem. Soc. 1982, 101, 441. 2. Bouabdallah, I.; Zidane, I and Ramdani, A. Rapport de DESA . Faculté des sciences, Oujda, Maroc, 2001. Sample Availability: Available from the Authors. © 2005 MDPI. All rights reserved. 23.03.2009 17:00