| 摘要 |
Preparation of 2,2-dialkylpropionaldehydes I …<IMAGE>… in which R<1> and R<2> stand for C1- to C4-alkyl groups, by hydroformylation of 1,1-dialkylethylenes II …<IMAGE>… with cobalt carbonyl complexes by… (a) carrying out the reaction in the presence of water-containing solvents in which water is soluble or at least partially soluble, the water content of the reaction mixture being between 0.1 and 20% by weight, or… (b) carrying out the reaction in the presence of a lactone which can carry one or more C1- to C4-alkyl groups as substituents, or of an aliphatic or cycloaliphatic sulphone. |
