We report here the ethenolysis of squalene and natural rubber utilizing (NHC)(NHCewg)RuCl2(= CRR’) and Grubbs–Hoveyda complexes. 0.01 mol% [Ru] per double bond are sufficient for extensive squalene cleavage, resulting in the formation of numerous terminal olefins, which were identified by GC/MS. The depolymerization of natural rubber requires 0.1 mol% [Ru] and leads to the formation of various oligomeric isoprenes, several of which (n = 2–6) were isolated and characterized.
我们在此报告了利用 (NHC)(NHCewg)RuCl2(= CRR’) 和 Grubbs-Hoveyda 配合物对
角鲨烯和
天然橡胶进行
乙烯醇分解。每个双键 0.01 mol% [Ru] 足以进行广泛的
角鲨烯裂解,从而形成大量末端烯烃,并通过 GC/MS 进行了鉴定。
天然橡胶的解聚需要 0.1 mol% [Ru],并导致形成各种低聚
异戊二烯,其中几种(n = 2-6)已被分离和表征。