| 摘要 |
A process for producing an allyl carboxylate comprising the step of reacting propylene, oxygen or oxygen-containing gas, and a lower saturated carboxylic acid in the presence of a catalyst at a temperature of 100 DEG C. to 300 DEG C. and a pressure of 0 to 30 atm (gauge) in a vapor phase. The catalyst is prepared by supporting, on a carrier, at least one alkali metal acetate and at least one bivalent palladium salt in the presence of: (A) at least one organic base selected from the group consisting of (i) aliphatic amines having the formula: <IMAGE> wherein R1, R2, and R3 may be the same or different and represent hydrogen, or an alkyl group having 1 to 10 carbon atoms or benzyl group optionally substituted with -CN, -OR, -COOR, or a -N(R)2 group wherein R is H or an alkyl group having 1 to 3 carbon atoms, or any two groups of R1, R2, and R3 may together form a ring provided that R1, R2, and R3 are not simultaneously hydrogen; (ii) aromatic amines having the formula: <IMAGE> wherein X represent -R, -CN, -OR, -COOR, -NO2, or -N(R)2 wherein R is the same as defined above, R2 and R3 are the same as defined above; and (iii) nitrogen-containing cyclic compounds having the formula: <IMAGE> wherein X is the same as defined above; and/or (B) at least one carboxylic acid having the formula: Y-CH2)n COOH wherein Y represents -OR, -CN, -COOR, -CH(R)NH2, -COR, -N(CH2COOH)2, -NHCH2COOH, or -CH(R1)X group wherein R, R1, and X are the same as defined in (A) above, and n is an integer of 1 to 4. This catalyst has a high activity and a long durability and can produce the desired allyl carboxylate at a high selectivity.
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