Electrochemical behavior of some ethylenedioxycoumarins: Cathodic dimerization

Tugral S., Berkem M. L.

JOURNAL OF MOLECULAR LIQUIDS, vol.196, pp.363-369, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 196
  • Publication Date: 2014
  • Doi Number: 10.1016/j.molliq.2014.04.006
  • Journal Name: JOURNAL OF MOLECULAR LIQUIDS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.363-369
  • Marmara University Affiliated: Yes

Abstract

Electrochemical behavior of recently synthesized 7,8-ethylenedioxy-4-methyl-2(H)-1-benzopyran-2-one, (1), 7,8-ethylenedioxy-2(H)-1-benzopyran-2-one, (2), and 6,7-ethylenedioxy-4-methy1-2(H)-1-benzopyran-2-one, (3) was studied using cyclic voltammetry at a hanging mercury drop electrode and controlled-potential coulometric techniques. The results indicated that an irreversible one-electron cathodic peak was observed for each compound in the potential range from 0.0 to -2.0 V. The coulometric experiments were performed in a low yield and the products were identified by FT-IR spectrometry, H-1 NMR and mass spectrometry. The coulometric results indicated a dimeric product for each compound. A mechanism for the electrodimerization pathway was proposed. (C) 2014 Elsevier B.V. All rights reserved.