Despite the lack of literature precedents, Mo and W based metathesis catalysts excel in extreme low catalyst loadings. Feedstock quality granted loadings of 6 – 50 ppm (by mole) are common.
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High activity, stabilized formulations, efficient synthesis and industrial use of Mo- and W-based metathesis catalysts
(Levente Ondi, Henrik Gulyas, Csaba Hegedus, Georg Frater, XiMo Hungary/XiMo Ag)