| 摘要 |
A continuous process for hydroformylating butene-2 so as to produce 2-methylbutanal in the presence of an halogen-free rhodium complex catalyst of the formula RhHm(CO)nLp, wherein "L" is a trialkyl (including cycloalkyl) phosphine ligand having a cone angle within the range of 159 to 171 degrees and wherein the frequency of the A1 carbonyl mode of the Ni(CO)3L in dichloromethane is within the range of 2056.1 to 2061.1 cm-1, there being no substantial excess of free phosphorous ligand.
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