Isolation and characterization of [(RhCp*)2{η1:η4:η 2-μ-CHC(Ph)CHC(Ph)CHCH2}]+ (Cp*=η5-C5Me5). Reinvestigation of the carbon-carbon bond formation between μ-CH2 group and alkynes.

Yuichi Kaneko; Takayoshi Suzuki; Kiyoshi Isobe; Peter M. Maitlis

doi:10.1016/S0022-328X(97)00756-0

Isolation and characterization of [(RhCp)₂{η¹:η⁴:η ²-μ-CHC(Ph)CHC(Ph)CHCH₂}]⁺ (Cp=η⁵-C₅Me₅). Reinvestigation of the carbon-carbon bond formation between μ-CH₂ group and alkynes.

Yuichi Kaneko, Takayoshi Suzuki, Kiyoshi Isobe, Peter M. Maitlis

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

On reinvestigation of the reaction of [(RhCp*)₂(μ-CH₂)₂(CH ₃CN)₂]²⁺ (1) with alkynes we have found a much cleaner reaction system than the previous ones which has allowed us to elucidate the reaction mechanism of the intriguing carbon-carbon bond formation of the μ-CH₂ groups and alkynes and to isolate the pure reaction product of [(RhCp*)₂{η¹:η⁴:η ²-μ-CHC(Ph)CHC(Ph)CHCH₂}]⁺ (2). The structure of 2 as the BPh₄^- salt has been determined by an X-ray diffraction study. Similar dirhodium complexes [(RhCp*)₂{η¹:η⁴:η ²-μ-CHC(COOMe)CHC(COOMe)CHCH₂}]⁺ (3) and [(RhCp*)₂{η¹:η⁴:η ²-μ-CHC(COOMe)CHC(Ph)CHCH₂}]⁺ (4) have been prepared and characterized spectroscopically.

Original language	English
Pages (from-to)	155-161
Number of pages	7
Journal	Journal of Organometallic Chemistry
Volume	554
Issue number	2
DOIs	https://doi.org/10.1016/S0022-328X(97)00756-0
Publication status	Published - Mar 10 1998
Externally published	Yes

Keywords

Alkyne
Carbon-carbon bond formation
Insertion reaction
Rhodium
μ-Methylene ligand

ASJC Scopus subject areas

Biochemistry
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1016/S0022-328X(97)00756-0

Cite this

Isolation and characterization of [(RhCp*)₂{η¹:η⁴:η ²-μ-CHC(Ph)CHC(Ph)CHCH₂}]⁺ (Cp*=η⁵-C₅Me₅). Reinvestigation of the carbon-carbon bond formation between μ-CH₂ group and alkynes. / Kaneko, Yuichi; Suzuki, Takayoshi; Isobe, Kiyoshi et al.
In: Journal of Organometallic Chemistry, Vol. 554, No. 2, 10.03.1998, p. 155-161.

Research output: Contribution to journal › Article › peer-review

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abstract = "On reinvestigation of the reaction of [(RhCp*)2(μ-CH2)2(CH 3CN)2]2+ (1) with alkynes we have found a much cleaner reaction system than the previous ones which has allowed us to elucidate the reaction mechanism of the intriguing carbon-carbon bond formation of the μ-CH2 groups and alkynes and to isolate the pure reaction product of [(RhCp*)2{η1:η4:η 2-μ-CHC(Ph)CHC(Ph)CHCH2}]+ (2). The structure of 2 as the BPh4- salt has been determined by an X-ray diffraction study. Similar dirhodium complexes [(RhCp*)2{η1:η4:η 2-μ-CHC(COOMe)CHC(COOMe)CHCH2}]+ (3) and [(RhCp*)2{η1:η4:η 2-μ-CHC(COOMe)CHC(Ph)CHCH2}]+ (4) have been prepared and characterized spectroscopically.",

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T1 - Isolation and characterization of [(RhCp*)2{η1:η4:η 2-μ-CHC(Ph)CHC(Ph)CHCH2}]+ (Cp*=η5-C5Me5). Reinvestigation of the carbon-carbon bond formation between μ-CH2 group and alkynes.

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AU - Suzuki, Takayoshi

AU - Isobe, Kiyoshi

AU - Maitlis, Peter M.

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N2 - On reinvestigation of the reaction of [(RhCp*)2(μ-CH2)2(CH 3CN)2]2+ (1) with alkynes we have found a much cleaner reaction system than the previous ones which has allowed us to elucidate the reaction mechanism of the intriguing carbon-carbon bond formation of the μ-CH2 groups and alkynes and to isolate the pure reaction product of [(RhCp*)2{η1:η4:η 2-μ-CHC(Ph)CHC(Ph)CHCH2}]+ (2). The structure of 2 as the BPh4- salt has been determined by an X-ray diffraction study. Similar dirhodium complexes [(RhCp*)2{η1:η4:η 2-μ-CHC(COOMe)CHC(COOMe)CHCH2}]+ (3) and [(RhCp*)2{η1:η4:η 2-μ-CHC(COOMe)CHC(Ph)CHCH2}]+ (4) have been prepared and characterized spectroscopically.

AB - On reinvestigation of the reaction of [(RhCp*)2(μ-CH2)2(CH 3CN)2]2+ (1) with alkynes we have found a much cleaner reaction system than the previous ones which has allowed us to elucidate the reaction mechanism of the intriguing carbon-carbon bond formation of the μ-CH2 groups and alkynes and to isolate the pure reaction product of [(RhCp*)2{η1:η4:η 2-μ-CHC(Ph)CHC(Ph)CHCH2}]+ (2). The structure of 2 as the BPh4- salt has been determined by an X-ray diffraction study. Similar dirhodium complexes [(RhCp*)2{η1:η4:η 2-μ-CHC(COOMe)CHC(COOMe)CHCH2}]+ (3) and [(RhCp*)2{η1:η4:η 2-μ-CHC(COOMe)CHC(Ph)CHCH2}]+ (4) have been prepared and characterized spectroscopically.

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KW - Rhodium

KW - μ-Methylene ligand

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