The synthetic approaches to cyclic phosphite and amido (diamido) phosphite ligands bearing the residues of electron withdrawing perfluorinated tails at the β-position to the phosphorus atom have been elaborated. Catalytic systems based on rhodium complexes of these ligands formed in situ using Rh (CO) 2 (acac) as a catalytic precursor demonstrate high activity in the hydroformylation of styrene along with good selectivity in respect to ...