Iodide-containing nitro-Grela-type catalysts have been synthesized and applied to ring closing metathesis (RCM) and cross metathesis (CM) reactions. These new catalysts have exhibited improved efficiency in the transformation of sterically, non-demanding alkenes. Additional steric hindrance in the vicinity of ruthenium related to the presence of iodides ensures enhanced catalyst stability. The benefits are most apparent under challenging conditions, such as very low reaction concentrations, protic solvents or with the occurrence of impurities.
含碘的硝基-Grela型催化剂已合成并应用于闭环复分解反应(RCM)和交叉复分解反应(CM)。这些新催化剂在转化非空间位阻要求的烯烃方面表现出了提高的效率。由于碘化物存在导致的钌附近额外的空间位阻确保了催化剂稳定性的增强。在极具挑战性的条件下,例如非常低的反应浓度、质子溶剂或存在杂质时,这些优势最为明显。