A variety of vinylic halides has been found to react with acrolein or methacrolein acetals and amines with palladium catalysts to form 5-amino 3-end acetals and/or dienal acetals. The reaction products yield 2, Cdienals on treatment with aqueous acids, in moderate to good yields. Crotonaldehyde dimethyl acetal also undergoes the reaction, but only in low yields. 3- Buten-2-one ethylene ketal reacted well under the same conditions, however, and ...
