Molecules 2001, 6(6), M212; doi:10.3390/M212
Short Note
3-Cyano-2-(2,5-dimethoxybenzalamino)-4-5-tetramethylenethiophene
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Chemistry Department, Faculty of Science, King Abdul-Aziz University, Jeddah 21589, P.O. Box 80203, Saudi Arabia
Molecules 2001, 6, M212
3-Cyano-2-(2,5-dimethoxybenzalamino)-4-5-tetramethylenethiophene
Abdullah Mohamed Asiri
Chemistry Department, Faculty of Science, King Abdul-Aziz University, Jeddah 21589, P.O. Box 80203,
Saudi Arabia. Tel.(+696)-2-6952293, Fax (+696)-2-6952293, E-mail: a_asiri@hotmail.com
http://aasiri2.kau.edu.sa/Default.aspx?Site_ID=0002617&lng=EN
sa.linkedin.com/pub/prof-abdullah-m-asiri/15/a01/396
sa.linkedin.com/pub/prof-abdullah-m-asiri/15/a01/396
جامعة الملك عبدالعزيز
KING ABDULAZIZ UNIVERSITY
Prof. Dr. Abdullah Mohamed Asiri
Chemistry Department
Faculty of Science
King Abdul-Aziz University
Faculty of Science
King Abdul-Aziz University
Chair, Chemistry Department at King AbdulAziz University &Director, Center of Excellence for Advanced Materials Research
3-Cyano-2-(2,5-dimethoxybenzalamino)-4-5-tetramethylenethiophene was prepared by condensation of
2-amino-3-cyano-4,5-tetramethylenethiophene 1 and 2,5-dimethoxybenzaldehyde 2 [1,2]. A mixture of
2-amino-3-cyano-4,5-tetramethylenethiophene 1 (1.0 g, 5.62 mmol) and 2,5-dimethoxybenzaldehyde 2
(0.93 g, 5.62 mmol) in ethanol (20 mL) was heated under reflux for four hours. The reaction mixture was
left to cool to room temperature and orang crystals was separated, filtered and washed with ethanol.
Rerecrystallization from ethanol gave 3 as orange crystals (1.74 g, 95%).
Mp. 140-142 oC (EtOH, uncorrected).
UV lmax (nm; Acetone)/e (dm3.mol-1.cm-1): 408/11410.
IR (KBr) 2220 (CN), 1600 (C=N).
1H-NMR (400 MHz; CDCl3; Me4Si): 1.85 (4H, d, 2xCH2-5,6), 2.67 (4H, dd, 42xCH2-4,7), 3.84, 3.85
(6H, s, CH3O), 6.85 (1H, d, J = 9.0 Hz), 7.01 (1H, dd, J46 = 3.1 Hz, J 43 = 9.0 Hz, H-4), 7.72 (1H, d, J64 =
3.1 Hz, H-6), 8.82 (1H, s, CH=N-).
13C-NMR: 22.0, 23.1, 24.3, 25.2, 55.8, 56.1 (2xCH3O), 106.4 (CN), 110.5, 112.6, 114.6, 121.3, 123.9,
132.1, 134.9, 153.7, 154.7, 154.8 (CH=N), 160.9.
Anal.Calc. for C18H18N2O2S (326.420): C 66.23, H 5.56, N 8.58; found : C 66.41, H 5.35 , N 8.39.
References
1. Asiri, A. M. Pak. J. Sci. Ind. Res. 1998, 41, 242.
2. Chalkley, L. Chem. Rev. 1929, 6, 217.
Summary
Prof. Abdullah M. Asiri
Head of the Chemistry Department, King Abdul Aziz University, KSA
Prof. Abdullah M. Asiri is the Head of the Chemistry Department at King Abdulaziz University since October 2009 and he is the founder and the Director of the Center of Excellence for
Advanced Materials Research (CEAMR) since 2010 till now. He is a Professor of Organic Photochemistry.
Prof. Asiri is the principal supervisors of more than 17Msc and one two PhD thesis; He is the main Author of ten books in different chemistry disciplines. He Published more than 413 research Papers in international Journals. Prof. Asiri is the Editor-in-Chief of King Abdulaziz University Journal of Science.A major achievement of Prof. Asiri is the discovery of tribochromic compounds, a class of compounds which change from slightly or colorless to deep colored when subjected to small pressure or when grind. This discovery was introduced to the scientific community as a new terminology Published by IUPAC in 2000. This discovery was awarded a patent from European Patent office and from UK patent and some other patents office in Europe.
Prof. Asiri involved in many committees at the KAU level and also on the national level, he took a major roll in the Advanced materials committee working for KACST to identify the National plan for science and technology in 2007.
Prof. Asiri played a major role in advancing the chemistry education and research in KAU, he has been awarded the best Researchers from KAU for the past four years. He also awarded the
Young Scientist award from the Saudi Chemical society in 2009, and also the first prize for the distinction in science from the Saudi chemical society in 2012. He also received a recognition certificate from the American Chemical society (Gulf region Chapter) for the advancement of chemical science in the Kingdome. Also he received a scopus certificate for the most Publishing Scientist in Saudi Arabia in chemistry in 2008.
Head of the Chemistry Department, King Abdul Aziz University, KSA
Prof. Abdullah M. Asiri is the Head of the Chemistry Department at King Abdulaziz University since October 2009 and he is the founder and the Director of the Center of Excellence for
Advanced Materials Research (CEAMR) since 2010 till now. He is a Professor of Organic Photochemistry.
Prof. Asiri is the principal supervisors of more than 17Msc and one two PhD thesis; He is the main Author of ten books in different chemistry disciplines. He Published more than 413 research Papers in international Journals. Prof. Asiri is the Editor-in-Chief of King Abdulaziz University Journal of Science.A major achievement of Prof. Asiri is the discovery of tribochromic compounds, a class of compounds which change from slightly or colorless to deep colored when subjected to small pressure or when grind. This discovery was introduced to the scientific community as a new terminology Published by IUPAC in 2000. This discovery was awarded a patent from European Patent office and from UK patent and some other patents office in Europe.
Prof. Asiri involved in many committees at the KAU level and also on the national level, he took a major roll in the Advanced materials committee working for KACST to identify the National plan for science and technology in 2007.
Prof. Asiri played a major role in advancing the chemistry education and research in KAU, he has been awarded the best Researchers from KAU for the past four years. He also awarded the
Young Scientist award from the Saudi Chemical society in 2009, and also the first prize for the distinction in science from the Saudi chemical society in 2012. He also received a recognition certificate from the American Chemical society (Gulf region Chapter) for the advancement of chemical science in the Kingdome. Also he received a scopus certificate for the most Publishing Scientist in Saudi Arabia in chemistry in 2008.
Experience
Director , The Center of EXcellenc For Advanced Materials Research
King AbdulAziz Universty
Patents
Azo Dyes
United States 2010/0081823
IssuedNetworks Cross-linked Carbon Nanotube
United Kingdom WO/2012/098345
FiledCross-linked graphene networks
United Kingdom PCT/GB2013/050571
FiledSynthesizing and utilizing solar light activated nano-particle photocatalyst.
United States US20130186840
FiledTRIBOCHROMIC COMPOUNDS AND THEIR APPLICATIONS
Europe WO/1994/026729
IssuedEducation
King Abdulaziz University (KAU) Health Sciences Center and University Campus Project | Jeddah, Saudi Arabia
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