PATENTS

      1423.  ------.  [I. G. FARBENINDUSTRIE, A. G.]  [Process for Producing Branched Aliphatic Compounds.]  German Patent Appl. I 73,190. OZ 13,669. filed Sept. 17, 1942 (Cl. IV D-12 o).  TOM Reel 36, bag 3,454. item 21, 4 pp.: Meyer Transl. PC-S-V. Oxo, vol. 1. chap. 24, 1948. p. 60.

            Branched aliphatic compounds are obtained through the interaction of olefins with CO and H₂ under elevated pressure and temperature in presence of catalysts and with hydrogenation, if desired, of the products.  It has now been found that the reaction of CO and H₂ at the olefinic double bond occurs in only 1 direction if such olefinic compounds are used as the raw material for the process in which 1 double bond C atom has no H atom, whereas the other has at least 1.  With such olefinic compounds, the formyl group adds only to the C atom having at least 1 H atom, whereas an H atom adds to the C atom that previously had no H atom.  There arises by the use of such raw material not a mixture of 2 structural isomers, but an individual product.  It is illustrated by the following example: