859. GREESHAM, W. F., AND BROOKS, R. E. (E. I. du Pont de Nemours & Co.). Acrolein. United States Patent 2,402,133, Jun 18, 1946. Chem. Abs., vol. 40, 1946, p. 6093.

Patent Abstracts

In the presence of a hydrogenation catalyst, acrolein (I) was produced directly from CO, H₂, and vinyl compounds of the type ROCH : CH₂, where R is an acyl radical, in accordance with the following equation: CH₂:CHOR+CO+H₂→I+ROH. For example. a mixture containing 137.6 gm. CH₂ : CHOAc (II). 20 gm. of reduced sintered CoO catalyst, and 1 gm. hydroquinone was heated to 78º-92º for 1 hr. at 200-310 atm., with an equimolecular mixture (III) of CO and H₃. The resulting product contained (I) (27% conversion) and MeCH(OAc)CHO (IV) (20% conversion).