In the present work, we report the homogeneous catalytic hydroformylation reaction of formaldehyde with rhodium complexes like [Rh(CO)2L2](PF6) with L = pyridine (1) or 4-picoline (2), using different solvents such as toluene, acetone, N,N-dimethylformamide, and 4-picoline. The experiments were carried out in an autoclave (Parr, 100 mL), 10 atm, CO/H2 = 1 and ratio catalyst/substrate 1/100. Preliminary kinetics parameters show a high catalytic activity of these complexes to the formation of methanol and methyl formate