NOVEL PHOTOSYNTHESIS OF 5,8A-DICHLORO-2-(4- METHOXYPHENYL)-8AH-CHROMENE FROM ITS CHALCONE ISOMER AND FT-IR, 1 H AND 13 C NMR SPECTROSCOPIC INVESTIGATION

  • ABDULLAH A. YOUSIF De.pt of Chemistry, College of Science, University of Duhok,Kurdistan Region–Iraq
  • GHAZWAN F. FADHIL De.pt of Chemistry, College of Science, University of Duhok,Kurdistan Region–Iraq
Keywords: Chalcone, Chromene, FT-IR, NMR, LC/Q-TOF/MS, CHNO.

Abstract

In the presence of alcoholic alkali, the base-catalyzed aldol condensation of equimolar quantities of
substituted acetophenones and aldehydes to give good yields of condensation product. This reaction is
known as the Claisen-Schmidt condensation. The Trans-3-(2,6-dichlorophenyl)-1-(4-methoxyphenyl)prop-
2-en-1-one (trans 2,6-methoxy chalcone) was synthesised by Clasien Schmidt reaction, then it exposed to
the Xenon lamp to prepare the 5,8a-dichloro-2-(4-methoxyphenyl)-8aH-chromene (2,6-methoxy
chromene). A number of techniques were used to characterise the mentioned two products such as, thin
layer chromatography, FT-IR, 1H and 13C nuclear magnetic resonance, liquid
chromatography/quadrupole time-of-flight mass spectrometry and elemental analysis (CHNO).

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Published
2020-12-11
How to Cite
YOUSIF, A. A., & FADHIL, G. F. (2020). NOVEL PHOTOSYNTHESIS OF 5,8A-DICHLORO-2-(4- METHOXYPHENYL)-8AH-CHROMENE FROM ITS CHALCONE ISOMER AND FT-IR, 1 H AND 13 C NMR SPECTROSCOPIC INVESTIGATION. Journal of Duhok University, 23(2), 118-134. https://doi.org/10.26682/sjuod.2020.23.2.14
Section
Pure and Engineering Sciences