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 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 …
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 …
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 CH3CHCHCH2Co(CO)4 (4), which, depending on the conditions, can undergo facile CO insertion to yield CH3CHCHCH2COCo(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.
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