Synthesis of water soluble cobalt(II), copper(II) phthalocyanines and their usage as a catalyst in the photoxidation of benzyl alcohol in biphasic catalysis

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Arin Öztürmen B. A., Akkol Ç., Saka E. T., Bıyıklıoğlu Z.

INORGANIC CHEMISTRY COMMUNICATIONS, vol.158, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 158
  • Publication Date: 2023
  • Doi Number: 10.1016/j.inoche.2023.111647
  • Journal Name: INORGANIC CHEMISTRY COMMUNICATIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, Chimica, DIALNET
  • Keywords: Benzaldeyhde, Biphasic catalysis, Oxidation, Phthalocyanine, Synthesis, Water soluble
  • Open Archive Collection: AVESIS Open Access Collection
  • Karadeniz Technical University Affiliated: Yes

Abstract

In this study, we synthesized and characterized cobalt(II), copper(II) phthalocyanines (2, 3) and their water soluble derivatives (2a, 3a) bearing dimethylamino groups. Then, benzaldehyde selective photoxidation of benzyl alcohol with four different oxygen sources and catalysts (2a, 3a) was carried out by biphasic catalysis. Optimal photocatalytic reaction conditions were determined as benzyl alcohol/ oxidant molar ratio 4.0/1 amount of the catalyst 2.0 mg (9.61 x 10-7 mmol), 25 degrees C and 30 min. 92 % conversion of benzyl alcohol with 1640 turnover number for 2a and 75 % benzaldehyde selectivity for 3a are achieved under the optimal con-ditions. Both catalysts can be used in three times and 2a can be catalytically active after 5 cycles with giving 72 % product conversion.