Rhodium-Catalyzed Intermolecular Cyclopropanation of Benzofurans, Indoles, and Alkenes via Cyclopropene Ring Opening was written by Ross, Rachel J.;Jeyaseelan, Rubaishan;Lautens, Mark. And the article was included in Organic Letters in 2020.Quality Control of 1-Tosylpiperidin-4-one This article mentions the following:
The generation of metal carbenoids via ring opening of cyclopropenes by transition metals offers a simple entry into highly reactive intermediates. Herein, we describe a diastereoselective intermol. rhodium-catalyzed cyclopropanation of heterocycles and alkenes using cyclopropenes as carbene precursors with a low loading of a com. available rhodium catalyst. The reported method is scalable and could be performed with catalyst loadings as low as 0.2 mol %, with no impact to the reaction yield or selectivity. In the experiment, the researchers used many compounds, for example, 1-Tosylpiperidin-4-one (cas: 33439-27-9Quality Control of 1-Tosylpiperidin-4-one).
1-Tosylpiperidin-4-one (cas: 33439-27-9) belongs to piperidine derivatives. Piperidine is a metabolite of cadaverine, a polyamine found in the human intestine. Piperidine derivatives bearing a masked aldehyde function in the 钄?position are easily transformed into quinolizidine compounds through intramolecular reductive amination.Quality Control of 1-Tosylpiperidin-4-one
Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem