Hydroformylation of various unsaturated substrates has been carried out using an oligomeric complex obtained by adding Rh(CO)(2)(acac) to oligo-1,4-phenyleneterephthalamide (OPTA). The reaction, performed in autoclave at 80 degreesC and 80 atm (CO/H-2 = 1:1) using art innovative glass device, gave satisfactory results. The catalyst could be easily recycled and reused 8-9 times without significant loss of efficiency. (C) 2004 Elsevier B.V. All rights reserved.