TY - JOUR
T1 - Homogeneous catalytic carbonylation of nitroaromatics Part III. Discovery and in situ high pressure FTIR spectral studies of a novel binuclear ruthenium catalyst
AU - Gargulak, Jerry D.
AU - Hoffman, Richard D.
AU - Gladfelter, Wayne L.
PY - 1991/9/15
Y1 - 1991/9/15
N2 - The binuclear ruthenium complex, Ru2(dmpm)2(CO)5, where dmpm=1,2-bis-(dimethylphosphino)methane, was found to catalyze the carbonylation of nitroaromatics in the presence of methanol to give N-arylmethylcarbamates in yields ranging from 47 to 60%. In situ FTIR spectral studies established that an equilibrium mixture of Ru2(dmpm)2(CO)5 and [(μ-H)Ru2(dmpm)2(CO)5]+ were present following initial mixing under CO (61 atm). Upon heating to 145 °C a new, as yet unidentified, species was observed. When the nitroaromatic was consumed, the spectrum indicated that the starting complex was reformed.
AB - The binuclear ruthenium complex, Ru2(dmpm)2(CO)5, where dmpm=1,2-bis-(dimethylphosphino)methane, was found to catalyze the carbonylation of nitroaromatics in the presence of methanol to give N-arylmethylcarbamates in yields ranging from 47 to 60%. In situ FTIR spectral studies established that an equilibrium mixture of Ru2(dmpm)2(CO)5 and [(μ-H)Ru2(dmpm)2(CO)5]+ were present following initial mixing under CO (61 atm). Upon heating to 145 °C a new, as yet unidentified, species was observed. When the nitroaromatic was consumed, the spectrum indicated that the starting complex was reformed.
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U2 - 10.1016/0304-5102(91)80087-J
DO - 10.1016/0304-5102(91)80087-J
M3 - Article
AN - SCOPUS:0026222625
SN - 0304-5102
VL - 68
SP - 289
EP - 293
JO - Journal of Molecular Catalysis
JF - Journal of Molecular Catalysis
IS - 3
ER -