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发现乙炔在PdCl_2-FeCl_3-H_2SO_4催化体系存在下以丁醇为溶剂进行氧化羰基化反应,可以得到(顺、反)丁烯二酸二丁酯。在常压和60℃下,催化剂得率为14g/1gPdCl_2·hr,产物收率为74 ％;而在6大气压和80℃下,得率平均为125g/1gPdCl_2·hr,收率达到84％。还提出了一个乙炔双金属络合活化成键的结构模型,来说明乙炔羰基化的微观反应机理。
It has been found that acetylene can be oxidized and carbonylated with butanol as solvent in the presence of PdCl_2-FeCl_3-H_2SO_4 catalytic system to obtain dibutyl maleate (cis and trans). The catalyst yield was 14 g / lgPdCl_2 · hr at atmospheric pressure and 60 ° C with a yield of 74%, while at 6 atm and 80 ° C, the yield averaged 125 g / 1gPdCl_2 · hr and the yield was 84%. A structural model of acetylene bimetallic complex activation bonding has also been proposed to illustrate the microscopic reaction mechanism of acetylene carbonylation.