Role of CO2 in Selective Hydrogenation of 1-Ethyl-2-Nitromethylenepyrrolidine to 1-Ethyl-2-Aminomethylpyrrolidine over Pd/C
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Translated
|
| Journal |
Kinetics and Catalysis
ISSN: 0023-1584
, E-ISSN: 1608-3210
|
| Output data |
Year: 1998,
Volume: 39,
Number: 2,
Pages: 182-187
Pages count
: 6
|
| Authors |
Simakova I.L.
1
,
Golovin A.V.
1
,
Semikolenov V.A.
1
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis Siberian Division Russian Academy of Sciences, Novosibirsk, 630090
|
|
Kinetic regularities of hydrogenation of 1-ethyl-2-nitromethylenepyrrolidine (ENMP) over Pd/C in the presence of CO2 are studied. The selectivity with respect to 1-ethyl-2-aminomethylpyrrolidine (EAMP) is shown to increase with increasing partial pressures of CO2 and Hz and the catalyst loading. The interaction between EAMP and CO2 is studied by IR and C-13 NMR spectroscopies and pH-metry. EAMP is found to react reversibly with CO2, forming carbamic acid. As a result, the basicity of a medium decreases to neutral. A scheme is proposed that explains the role of CO2 in the selective hydrogenation of ENMP to EAMP.