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Synthesis and application of chromium complexes based on 4,5-bis(diphenylphosphanyl)-H-1,2,3-triazole ligands to obtain higher С10–С18 olefins

https://doi.org/10.32362/2410-6593-2024-19-1-39-51

Abstract

Objectives. To synthesize 4,5-bis(diphenylphosphanyl)-H-1,2,3-triazole ligands and new chromium complexes based on them, in order to obtain a fraction of higher C10–C18 alpha-olefins from ethylene.

Methods. The Schlenk technique was used to obtain the target chromium complexes. Diphenylphosphanyl triazole ligands can be characterized by nuclear magnetic resonance spectroscopy. The composition of the final products was confirmed by elemental analysis. The liquid phase of the oligomerization reaction was studied by gas chromatography.

Results. L1–L9 ligands were obtained, and K1–K9 chromium complexes were synthesized based on the correspondent ligands using commercially available chromium (III) trichloride tris(tetrahydrofuran). The K1–K9 complexes thus obtained were tested in the process of ethylene oligomerization.

Conclusions. Chromium complexes based on 4,5-bis(diphenylphosphanyl)-H-1,2,3-triazoles K1–K9 were produced in high yields using the Schlenk technique. It was found that systems based on the K4–K7 and K9 complexes enable the ethylene oligomerization process to be carried out with a sufficiently high level of productivity. It was shown that the introduction of a dialkyl zinc derivative increases the performance and selectivity of the catalytic system for the target fraction.

About the Authors

A. A. Senin
United Research and Development Center
Russian Federation

Aleksey A. Senin, Researcher, Laboratory of Polymer Products and Polymer Additives.

55/1-2, Leninskii pr., Moscow, 119333


Competing Interests:

The authors declare no conflicts of interest



K. B. Polyanskii
United Research and Development Center
Russian Federation

Kirill B. Polyanskii - Cand. Sci. (Chem.), Leading Researcher, Laboratory of Polymer Products and Polymer Additives.

55/1-2, Leninskii pr., Moscow, 119333


Competing Interests:

The authors declare no conflicts of interest



A. M. Sheloumov
United Research and Development Center
Russian Federation

Aleksey M. Sheloumov - Cand. Sci. (Chem.), Leading Researcher, Laboratory of Polymer Products and Polymer Additives.

55/1-2, Leninskii pr., Moscow, 119333


Competing Interests:

The authors declare no conflicts of interest



V. V. Afanasiev
United Research and Development Center
Russian Federation

Vladimir V. Afanasiev - Cand. Sci. (Chem.), Deputy Head, Laboratory of Polymer Products and Polymer Additives.

55/1-2, Leninskii pr., Moscow, 119333


Competing Interests:

The authors declare no conflicts of interest



T. M. Yumasheva
United Research and Development Center
Russian Federation

Tatiana M. Yumasheva - Cand. Sci. (Chem.), Head of the Laboratory of Polymer Products and Polymer Additives.

55/1-2, Leninskii pr., Moscow, 119333


Competing Interests:

The authors declare no conflicts of interest



K. B. Rudyak
United Research and Development Center
Russian Federation

Konstantin B. Rudyak - Dr. Sci. (Eng.), General Director.

55/1-2, Leninskii pr., Moscow, 119333


Competing Interests:

The authors declare no conflicts of interest



S. V. Vorobyev
National University of Oil and Gas (Gubkin University)
Russian Federation

Stepan V. Vorobyev - Cand. Sci. (Chem.), Associate Professor, Department of Organic Chemistry and Petroleum Chemistry. Scopus Author ID 57204359493, ResearcherID О-8748-2016.

65-1, Leninskii pr., Moscow, 119991


Competing Interests:

The authors declare no conflicts of interest



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  • We synthesize 4,5-bis(diphenylphosphanyl)-H-1,2,3-triazole ligands and new chromium complexes based on them, in order to obtain a fraction of higher C10–C18 alpha-olefins from ethylene.
  • The Schlenk technique was used to obtain the target chromium complexes.
  • Diphenylphosphanyl triazole ligands can be characterized by nuclear magnetic resonance spectroscopy. The composition of the final products was confirmed by elemental analysis. The liquid phase of the oligomerization reaction was studied by gas chromatography.

Review

For citations:


Senin A.A., Polyanskii K.B., Sheloumov A.M., Afanasiev V.V., Yumasheva T.M., Rudyak K.B., Vorobyev S.V. Synthesis and application of chromium complexes based on 4,5-bis(diphenylphosphanyl)-H-1,2,3-triazole ligands to obtain higher С10–С18 olefins. Fine Chemical Technologies. 2024;19(1):39-51. https://doi.org/10.32362/2410-6593-2024-19-1-39-51

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