Phản ứng kết hợp Fe–C xúc tác bằng kim loại chuyển tiếp trong tổng hợp phức chất dicarbonyl(2-thienylethynyl)(η5-cyclopentadienyl)iron: Nghiên cứu quang phổ, cấu trúc và điện hóa

Springer Science and Business Media LLC - Tập 45 - Trang 589-594 - 2020
Victor V. Verpekin1, Ivan S. Ahremchik1,2, Alexander D. Vasiliev3,2, Galina V. Burmakina1, Alexander A. Kondrasenko1, Tatyana S. Nedelina1, Arkadii Z. Kreindlin4
1Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russia
2Siberian Federal University, Krasnoyarsk, Russia
3Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russia
4A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russian Federation

Tóm tắt

Phức chất σ-alkynyl sắt(II) mới Cp(CO)2Fe-C≡C-(2-C4H3S) đã được tổng hợp bằng cách áp dụng một số phương pháp đã biết dựa trên các phản ứng kết hợp Fe–C xúc tác bởi kim loại chuyển tiếp (Pd/Cu–, Au–, Cu– và Pd–) giữa 2-ethynylthiophen hoặc 2-[(trimethylsilyl)ethynyl]thiophen với iodide cyclopentadienyliron dicarbonyl. Năng suất của phức chất trong các phản ứng này được phát hiện là phụ thuộc mạnh vào xúc tác được sử dụng. Các điều kiện, xúc tác và tá dược cung cấp năng suất cao nhất cho phức chất 2-thienylethynyl sắt mong muốn đã được xác định. Phức chất được đặc trưng bằng phổ IR, 1H và 13C NMR. Cấu trúc phân tử của Cp(CO)2Fe–C≡C-(2-C4H3S) được xác định bởi phân tích nhiễu xạ tia X cho thấy cấu hình hình học ghế ba chân. Tính chất oxy hóa khử của phức chất mới được nghiên cứu.

Từ khóa

#Fe–C coupling #σ-alkynyl iron(II) complex #transition metal catalysis #spectroscopy #electrochemical properties

Tài liệu tham khảo

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