| abstract |
(57) [Summary] (Modified) [Purpose] A simple and more economical method for producing 3-alkoxycarbonylpropenal and 3-dialkoxymethylpropenal. [Structure] General formula IIa: Or general formula IIb: [In the above formula, R 1 represents a C 1 to C 3 alkyl group, and R 2 And R 3 represents hydrogen, methyl or ethyl, and R 4 and R 5 represent a C 1 -C 4 alkyl group, provided that R 4 and R 5 may be bonded so as to form a 5-membered or 6-membered ring] with a corresponding alcohol represented by oxygen or an oxygen-containing gas in a gas phase. The reaction is carried out in the presence of the Group IB metals in the table or compounds of one of these metals. |