| 摘要 |
PURPOSE:To obtain the titled compound useful as perfume, drugs, etc. from enexpensive raw materials by a simple process in high selectivity in high yield, by reacting a ketone with methanol as the raw materials by the use of a catalyst consisting of Fe-Mg-O system. CONSTITUTION:A ketone shown by the formula I (R is 1-4C alkyl, or 6-10C aryl) such as acetone and methanol are preferably vaporized, and reacted in the presence of a catalyst shown by the formula II(a, b, and c are 0.5-20, 48-60, and 32-39.5wt%, respectively, with the proviso that a+b+c=100) comprising Fe, Mg and O at 250-450 deg.C for 0.5-8sec, preferably about atmospheric pressure to give the desired compound shown by the formula III such as methyl vinyl ketone, etc. A ketone having one more carbon is obtained from a starting raw material shown by the formula IV. The catalyst, for example, is prepared by impregnating MgO with an aqueous solution of tetravalent Fe nitrate, drying it at 20-60 deg.C for 12-14hr, molding it, calcining it at 300-700 deg.C for 1-10hr. |
