Carbonylation of diols and their ethers and esters with ruthenium catalysts: synthesis of lactones and hydroxyacids ethers and esters
作者:G. Braca、G. Sbrana、A.M.Raspolli Galleti、S. Berti
DOI:10.1016/s0022-328x(00)99462-2
日期:1988.3
temperature of 200°C and CO pressure of 10-20 MPa. The reaction in the case of 1,3-propanediol gives γ-butyrolactone, with a selectivity of 60-% . Side reactions of homologation to 1,4-butanediol derivatives and hydrogenolysis to n-propyl derivatives by H2 produced by the water gas shift reaction (WGSR) also occur, together with acid-catalyzed dehydration to give linear polypropylene glycols, α,ω-diols
可以在200°C的温度下,在羰基碘化钌[Ru(CO)3 I 3 ] - /烷基或金属碘化物的存在下,将二醇及其甲酸或乙酸酯羰基化,以生成内酯或相应的醚羟基酸酯。C和CO压力为10-20 MPa。在1,3-丙二醇的情况下,反应产生选择性为60%的γ-丁内酯。还发生了由水煤气变换反应(WGSR)产生的H 2与Hg合成为1,4-丁二醇衍生物和氢解为正丙基衍生物的副反应,以及酸催化的脱水反应,生成线性聚丙二醇α,ω-链中具有3个以上碳原子的二醇优先提供羟基酸酯和醚。