| abstract |
Process for the preparation of glyoxal monoacetals of the general formula in which R¹, R², R³ and R⁴ are aliphatic radicals having 1 to 6 carbon atoms or aromatic radicals and up to three of the radicals R¹, R², R³ and R⁴ can also be hydrogen atoms, in which glyoxal with a 1.3 Propanediol of the formula in the presence of water and an acid at temperatures up to 150 ° C, and new glyoxal monoactals. |