Isolation of trans-2,5-bis(methoxycarbonyl)ruthenacyclopentane by oxidative coupling of methyl acrylate on ruthenium(0) as an active intermediate for tail-to-tail selective catalytic dimerization

Organometallics

Volumn 28, Issue 17, 2009, Pages 4902-4905

  Hirano, Masafumi ^a   Sakate, Yumiko ^a   Komine, Nobuyuki ^a   Komiya, Sanshiro ^a   Bennett, Martin A ^b  

^a TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY   (Japan)

^b AUSTRALIAN NATIONAL UNIVERSITY   (Australia)

Author keywords

[No Author keywords available]

Indexed keywords

METHYL ACRYLATES; OXIDATIVE COUPLINGS;

ACETONITRILE; NAPHTHALENE; RUTHENIUM;

DIMERIZATION;

EID: 69949117207     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om9004065     Document Type: Article

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19. 2 (cf. the Supporting Information). This structure is consistent with all obtained spectroscopic data, and it is one of the reasonable structures as a precursor of 3.
20. 1H NMR spectrum showed that neither 1 nor 2 was present in the brown oil and new resonances similar to those of 2 having singlets at δ 3.11, 3.36, and 3.38 as well as multiplets in the region of δ 1.6-2.8 were observed. These may arise from isomers of 2, but we could not identify them.
21. 6 at room temperature.
22. 2), GOF= 1.146.
23. -1 is due to sidebonded acetonitrile seems to be excluded, because the X-ray analysis clearly indicates end-on coordination of the acetonitrile ligands: Ru(1)-N(1)C(17)=171.95(14)° and Ru(1)-N(2)-C(19)=172.54(13)°.
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25. 10); acac = acetylacetonate; BIM = butylimidazole.