HYDROFORMYLATION OF UNSATURATED ALCOHOLS CATALYZED BY RH(ACAC)(CO)(2)MODIFIED WITH DIFFERENT PHOSPHORUS LIGANDS

The hydroformylation of unsaturated alcohols, 3-buten-2-ol, 1-octen-3- ol and 5-hexen-1-ol, catalyzed with systems containing Rh(acac)(CO)(2) and phosphorus ligands, like ortho-, meta-and para-substituted triphe nylphosphite, triphenylphosphine and diphosphine, Ph(2)P(CH2)(x)PPh(2) (x=2,4), has been studied at 60 and 80 degrees C under 10 atm of H-2/ CO=1. The main hydroformylation reaction products of the allyl alcohol s 3-buten-2-ol and 1-octen-3-ol are the cyclic compounds 2-hydroxy-5-m ethyltetrahydrofuran C and 2-hydroxy-5-pentyl-tetrahydrofuran G, respe ctively, Hydroformylation of 5-hexen-1-ol produces the hydroxyaldehyde s 7-hydroxyheptanal H and 2-methyl-6-hydroxyhexanal I. The highest cat alytic activity has been demonstrated by the systems modified with Ph( 2)P(CH2)(4)PPh(2) and P(O-m-MeC(6)H(4))(3).