2088. LUTHER, M., AND WIETZEL, R. (I. G. Farbenindustrie A. G.). [Isobutyl Alcohol.] German Patent 479,829, Dec. 25, 1923. Chem. Abs., vol. 23, 1929, p. 4951.

Isobutyl alcohol is prepared by the catalytic hydrogenation of a mixture of CO₂, MeOH, and O-containing organic compounds and fractionating the product. Thus, a mixture of CO_2, MeOH, and O₂ is hydrogenated under pressure by the aid of a contact mass of Cr, Mo, or W. The product is dissolved in alkali to remove unchanged MeOH. The rest of the MeOH is removed by adding HCOOH and distilling off the HCOOMe. The fraction of the distillate at 80°-125° is 75% isobutyl alcohol. Gives other examples.