1-Octene → 1-Octene

Participants

Reaction Steps

The hydroformylation of 1-octene was carried out in the following manner. Approximately 0.019 grams of Rh6 (CO)16 was charged to a 200 ml stainless steel, glass lined pressure vessel equipped with a magnetic stirrer. After introduction of the rhodium carbonyl compound, the phosphine ligand, 12 grams of 1-octene and 21 grams of toluene were added to the pressure vessel. After stirring for about 10 minutes, the contents were preheated to a temperature of about 80° C. or within about 10° of the reaction temperature. The reactor then was sealed and flushed with 200 psi charges of a synthesis gas mixture of hydrogen and carbon monoxide and containing 50% hydrogen by volume. The vessel then was pressured to 750 psi with the synthesis gas. Continuous agitation was maintained and the reaction was observed by recording pressure drop as a function of time. The reaction was terminated at 300 psi after which the contents were analyzed for product conversion. Tables I-III show the results of various hydroformylation runs of 1-octene using various phosphine ligands, rhodium and phosphine concentrations, various phosphine-rhodium molar ratios. In the tables immediately following, L/Rh refers to the molar ratio of ligand to rhodium metal, n/i refers to the molar ratio of normal to iso isomer in percent, conversion refers to the percent of olefin converted to saturated aldehyde including both normal and iso isomer.

Provenance & Evidence