作者:Thomas Dietel、Fabian Lukas、Winfried P. Kretschmer、Rhett Kempe
DOI:10.1126/science.abm5281
日期:2022.3.4
α-Olefins are important starting materials for the production of plastics, pharmaceuticals, and fine and bulk chemicals. However, the selective synthesis of α-olefins from ethylene, a highly abundant and inexpensive feedstock, is restricted, and thus a broadly applicable selective α-olefin synthesis using ethylene is highly desirable. Here, we report the catalytic reaction of an α-olefin with two ethylene
α-烯烃是生产塑料、药品以及精细和大宗化学品的重要原料。然而,由高度丰富且廉价的原料乙烯选择性合成α-烯烃受到限制,因此非常需要使用乙烯进行广泛适用的选择性α-烯烃合成。在这里,我们报告了 α-烯烃与两个乙烯分子的催化反应。第一个乙烯分子形成一个 4-乙基支链,第二个乙烯分子形成一个新的末端碳-碳双键(C2 延伸)。该反应的关键是开发一种高活性和稳定的分子钛催化剂,该催化剂可以极快地进行β-氢化物的消除和转移。