Solvent effects on the UV-visible absorption spectra of aryl-2,2'-bifuran derivatives
Abdelhamed, F., Ismail, M., Abdel-Latif, E. (2019). Solvent effects on the UV-visible absorption spectra of aryl-2,2'-bifuran derivatives. EKB Journal Management System, 43(1), 32-35. doi: 10.21608/mjcc.2019.412966
Fatma H. Abdelhamed; Mohamed A. Ismail; Ehab Abdel-Latif. "Solvent effects on the UV-visible absorption spectra of aryl-2,2'-bifuran derivatives". EKB Journal Management System, 43, 1, 2019, 32-35. doi: 10.21608/mjcc.2019.412966
Abdelhamed, F., Ismail, M., Abdel-Latif, E. (2019). 'Solvent effects on the UV-visible absorption spectra of aryl-2,2'-bifuran derivatives', EKB Journal Management System, 43(1), pp. 32-35. doi: 10.21608/mjcc.2019.412966
Abdelhamed, F., Ismail, M., Abdel-Latif, E. Solvent effects on the UV-visible absorption spectra of aryl-2,2'-bifuran derivatives. EKB Journal Management System, 2019; 43(1): 32-35. doi: 10.21608/mjcc.2019.412966

Solvent effects on the UV-visible absorption spectra of aryl-2,2'-bifuran derivatives

Mansoura Journal of Chemistry
Volume 43, Issue 1, February 2019, Page 32-35  XML PDF (726.82 K)
Document Type: Original Article
DOI: 10.21608/mjcc.2019.412966
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Authors
Fatma H. Abdelhamed* 1; Mohamed A. Ismail1; Ehab Abdel-Latif2
1Chemistry Department, Faculty of Science, Mansoura University, 35516 Mansoura, Egypt
2Chemistry Department, Faculty of Science, Mansoura University
Abstract
The effect of solvent polarity on absorption spectra of a series of bifuran carbonitriles and their corresponding carboxamidine hydrochloride salts was investigated. Synthesis of the new thienylbifuran-5-carbonitrile 5 was described through a Stille coupling reaction of the precursor 5'-bromo-[2,2'-bifuran]-5-carbonitrile with 2-tri-n-butylstannylthiophene. Cationic thienylbifuran carboxamidine compound 6 was prepared on treatment its corresponding carbonitrile compound 5 with lithium bis-trimethylsilylamide, followed by de-protection step and subsequent hydrochloride salt formation. The relationship between aryl-2,2'-bifuran structure feature and their corresponding absorption in the UV–visible region was studied. The absorption maxima of the tested aryl-2,2'-bifuran derivatives showed that λmax of the amidine derivatives shifted to higher wavelength than their corresponding carbonitrile derivatives.
Keywords
2'-bifuran-5-carbonitriles; Stille reaction; 2; 2'-bifuran-5-amidines; UV/Vis absorption; solvent effect
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