کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1321511 | 1499894 | 2013 | 7 صفحه PDF | دانلود رایگان |

• Synthesis and characterization of tetra-substituted cobalt phthalocyanines.
• Investigation of catalytic activity of cobalt phthalocyanine.
• Determination of substrate, oxidant, temperature effect on cyclohexene oxidation.
In this work, the new phthalonitrile derivatives 4, 5 bearing 1,3-bis(naphthalen-1-yloxy)propan-2-ol and 1,3-bis(naphthalen-2-yloxy)propan-2-ol, cobalt phthalocyanine complexes have been synthesized. The new cobalt phthalocyanines have been prepared by cyclotetramerization of phthalonitrile derivatives 4, 5 in the presence of the corresponding CoCl2 salt in DMAE by using a microwave oven. The new compounds have been characterized by IR, 1H NMR, 13C NMR and MS spectral data. The new complexes have been tested as a catalyst for the oxidation of cyclohexene with different oxidants, such as tert-butylhydroperoxide (TBHP), m-chloroperoxybenzoic acid (m-CPBA) and hydrogen peroxide (H2O2), in DMF. m-CPBA is also found as the most successful oxidant in the other oxygen sources. In this sense, the substrate/catalyst ratio, the influence of temperature, oxidant/cat ratio and type of oxidant have been studied. It is observed three oxidation products. First one is 2-cyclohexene-1-ol as dominant product and the others are 2-cyclohexene-1-one and cyclohexene oxide as minor product.
Synthesis and catalytic activity of cobalt(II) phthalocyanines.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volumes 745–746, 15 November 2013, Pages 18–24