Synthesis, characterization and study of the liquid crystalline behavior of four and six heterocyclic compounds
Other Title(s)
تحضير, تشخيص و دراسة السلوك البلوري السائل لمركبات رباعية و سداسية الحلقة غير المتجانسة
Joint Authors
Karam, Nisrin Husayn
Tumi, Ivan Hamid Roel
al-Jazrawi, Jumbad Hurmuz Tuma Musa
Source
Issue
Vol. 57, Issue 3B (30 Sep. 2016), pp.1876-1890, 15 p.
Publisher
University of Baghdad College of Science
Publication Date
2016-09-30
Country of Publication
Iraq
No. of Pages
15
Main Subjects
Topics
Abstract EN
The new compounds synthesized by sequence reactions starting from a reaction of 4-hydroxybenzaldehyde with 1,5-dibromo pentane to produce dialdehyde)I( .Then compound )I( reacted with different aromatic amines to give schiff bases )II-IV(,thereafter added acetyl chloride to schiff bases to yield N-acyl derivatives)V-VII(.While1,3-diazetine derivatives)VIII-X( were synthesized from the reaction of N-acyl derivatives with sodium azide.The reaction of thiourea with N-acyl compounds led to formation of thiourea derivatives (XI-XIII).Finally, the pyrimidine compounds )XIV-XVI( were synthesized by ring closure reaction of compounds(XI-XIII) with diethyl malonate.The synthesized compounds were characterized by measurements of melting points,FTIR,1H-NMR and mass spectroscopy for some prepared compounds.The liquid crystalline properties were studied by hot stage polarizing microscopy and differential scanning calorimetry DSC for compound (IX).
The compounds)VI(, (IX),(XII) and (XV) display enantiotropic nematic mesophase, while other compounds(V),(VII),( VIII),(X),(XI),(XIII),(XIV) and( XVI) did not show any liquid crystalline properties.
American Psychological Association (APA)
Karam, Nisrin Husayn& Tumi, Ivan Hamid Roel& al-Jazrawi, Jumbad Hurmuz Tuma Musa. 2016. Synthesis, characterization and study of the liquid crystalline behavior of four and six heterocyclic compounds. Iraqi Journal of Science،Vol. 57, no. 3B, pp.1876-1890.
https://search.emarefa.net/detail/BIM-709534
Modern Language Association (MLA)
Karam, Nisrin Husayn…[et al.]. Synthesis, characterization and study of the liquid crystalline behavior of four and six heterocyclic compounds. Iraqi Journal of Science Vol. 57, no. 3B (2016), pp.1876-1890.
https://search.emarefa.net/detail/BIM-709534
American Medical Association (AMA)
Karam, Nisrin Husayn& Tumi, Ivan Hamid Roel& al-Jazrawi, Jumbad Hurmuz Tuma Musa. Synthesis, characterization and study of the liquid crystalline behavior of four and six heterocyclic compounds. Iraqi Journal of Science. 2016. Vol. 57, no. 3B, pp.1876-1890.
https://search.emarefa.net/detail/BIM-709534
Data Type
Journal Articles
Language
English
Notes
Text in English ; abstracts in English and Arabic.
Record ID
BIM-709534