Mechanism of the Pyridine-Modified Cobalt-Catalyzed Hydromethoxycarbonylation of 1,3-Butadiene

Mechanism of the Pyridine-Modified Cobalt-Catalyzed Hydromethoxycarbonylation of 1,3-Butadiene

The pyridine-modified cobalt-catalyzed hydromethoxycarbonylation of 1,3-butadiene (1) starts by the disproportionation of Co2(CO)8 to [CoPy6][Co(CO)4]2 followed by the formation of HCo(CO)4 (3). The addition of 3 to 1 leads to CH3CHCHCH2Co(CO)4 (4), which, depending on the conditions, can undergo f...

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Veröffentlicht in:Organometallics 2003-04, Vol.22 (8), p.1582-1584
Hauptverfasser: Tuba, Róbert, Mika, László T, Bodor, Andrea, Pusztai, Zoltán, Tóth, Imre, Horváth, István T
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container_end_page 1584
container_issue 8
container_start_page 1582
container_title Organometallics
container_volume 22
creator Tuba, Róbert
Mika, László T
Bodor, Andrea
Pusztai, Zoltán
Tóth, Imre
Horváth, István T
description The pyridine-modified cobalt-catalyzed hydromethoxycarbonylation of 1,3-butadiene (1) starts by the disproportionation of Co2(CO)8 to [CoPy6][Co(CO)4]2 followed by the formation of HCo(CO)4 (3). The addition of 3 to 1 leads to CH3CHCHCH2Co(CO)4 (4), which, depending on the conditions, can undergo facile CO insertion to yield CH3CHCHCH2COCo(CO)4 (5) or reversible decarbonylation to form η3-C4H7Co(CO)3 (7). Pyridine accelerates the conversion of 7 to methyl-3-pentenoate (2) and the methanolysis of 5.
doi_str_mv 10.1021/om030058x
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title Mechanism of the Pyridine-Modified Cobalt-Catalyzed Hydromethoxycarbonylation of 1,3-Butadiene
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