The use of a cobalt carbonylpyridine complex (CCP) as a catalyst precursor makes its possible to synthesize the C-17-C-19 "coconut oil acids" from C-16-C-18 alpha-olefins, the ethylene oligomerization products, and the C-7, C-8, and C-10 acids from C-6, C-7, and C-9 olefins, respectively. The effect of the concentrations of C-16-C-18 olefins, water, cobalt, and carbon monoxide on the reaction rate was revealed. The rate equation was derived, and the equilibrium constants of quasi-equilibrium steps and the rate constants of the rate-determining step of the reaction were calculated for C-6, C-7, and C-9 olefins and the C-16-C-18 fraction of alpha-olefins.