1234462-87-3Relevant academic research and scientific papers
Tandem Ring-Opening–Ring-Closing Metathesis for Functional Metathesis Catalysts
Nagarkar, Amit A.,Yasir, Mohammad,Crochet, Aurelien,Fromm, Katharina M.,Kilbinger, Andreas F. M.
supporting information, p. 12343 - 12346 (2016/10/13)
Use of a tandem ring-opening–ring-closing metathesis (RORCM) strategy for the synthesis of functional metathesis catalysts is reported. Ring opening of 7-substituted norbornenes and subsequent ring-closing metathesis forming a thermodynamically stable 6-membered ring lead to a very efficient synthesis of new catalysts from commercially available Grubbs’ catalysts. Hydroxy functionalized Grubbs’ first- as well as third-generation catalysts have been synthesized. Mechanistic studies have been performed to elucidate the order of attack of the olefinic bonds. This strategy was also used to synthesize the ruthenium methylidene complex.
Cycloadditions by oxidative visible light photocatalysis
Ischay, Michael A.,Lu, Zhan,Yoon, Tehshik P.
supporting information; experimental part, p. 8572 - 8574 (2010/08/06)
Photochemical reactions are remarkable for their ability to easily assemble cyclobutanes and other strained ring systems that are difficult to construct using other conventional synthetic methods. We have previously shown that Ru(bpy)32+ is an efficient photocatalyst that promotes the [2+2] cycloadditions of electron-deficient olefins with visible light. Here, we show that Ru(bpy)32+ is also an effective photocatalyst for the [2+2] cycloaddition of electron-rich olefins. This transformation is enabled by the versatile photoelectrochemical properties of Ru(bpy) 32+, which enables either one-electron reduction or one-electron oxidation of interesting organic substrates under appropriate conditions.
