Hydroformylation of olefins in the presence of ruthenium catalysts

Abstract

The hydroformylation of pent-1-ene-5- d 3 in the presence of Ru 3(CO) 12 H 4Ru 4(CO) 8 [(−)-DIOP] 2 under 7–50 atmosphere pressure of carbon monoxide gives a high percentage of the straight-chain isomer. Deuterium retention is complete only under a high CO pressure. In the presence of Ru 3(CO) 12 redistribution of deuterium within the molecule takes place whatever the pressure of carbon monoxide. In the presence of H 4Ru 4(CO) 8[(−)-DIOP] 2 the deuterium is completely retained, and is found in the methyl hexanoate only in α,β and ω positions relative to the carbomethoxy group.