A series of in situ‐prepared catalytic systems incorporating RuII precursors and bidentate phosphine ligands has been probed in the reductive carboxylation of ethylene in the presence of triethylsilane as reductant. The catalytic production of propionate and acrylate silyl esters was evidenced by high‐throughput screening (HTS) and implemented in batch reactor techniques. The most promising catalyst
在三乙基
硅烷作为还原剂的情况下,在
乙烯的还原羧化反应中,探索了一系列结合Ru II前体和双齿
膦配体的原位催化体系。高通量筛选(H
TS)证明了
丙酸酯和
丙烯酸甲
硅烷基酯的催化生产,并在间歇反应器技术中实施。鉴定出最有希望的催化剂体系是由Ru(H)(Cl)(CO)(PPh 3)3和1,4-双(
二环己基膦基)
丁烷(DCPB)或1,1'-
二茂铁-二基-双(
环己基膦)制成)(DCPF)。注意到
水对
丙烯酸酯/
丙酸酯选择性的显着影响。周转数[mol mol(Ru)-1]多达16为
丙烯酸酯和高达68为
丙酸酯相对温和的条件下达到(20巴,100℃,0.5摩尔%的Ru,40摩尔%H 2 ö与HSiEt 3)。讨论了可能的机制。