乙炔双羰基化催化合成丁（烯）二酸酯

Synthesis of Esters of Succinic Acid by Acetylene Dicarbonylation

摘要:

以C2H2、CO和正丁醇为原料，采用PdBr2为主催化剂，在常压、55℃条件下，双羰基化一步合成丁（烯）二酸丁酯。考察了催化剂用量、助剂种类及用量、溶剂种类、反应温度和反应时间对丁（烯）二酸酯收率的影响。结果表明，在反应条件〔PdBr2用量0.04g，n(PdBr2):n(LiBr)=1:8，甲基磺酸0.1mL，乙腈为溶剂，n(C2H2):n(CO)=1:2，101kPa，55℃，反应3h〕下，丁（烯）二酸丁酯的收率达到76.11%。

Abstract:

Using C2H2, CO and n-butanol as raw materials, using PdBr2 as the main catalyst in the synthesis of succinate by the dicarbonylaon under normal pressure and 55℃ conditions. The effects of the amount of catalyst, the type and amount of auxiliaries, the type of solvent, reaction temperature and reaction time on yield of dibutyl succinate, dibutyl maleate and dibutyl fumarate were investigated. The experimental results showed that in optimal conditions : the amount of PdBr2 was 0.04g, n(PdBr2):n(LiBr)=1:8, 0.1mL methanesulfonic acid, the solvent was acetonitrile, n(C2H2):n(CO)=1:2, 101KPa, reaction at 55°C for 3h, the yield of dibutyl succinate, dibutyl maleate and dibutyl fumarate reached 76.11%.