129648-04-0Relevant academic research and scientific papers
Interaction of rhodium(I) with cyclopropenones: Decarbonylation and formation of 1-rhodacyclopentene-2,5-diones and cationic oxygen σ-bound cyclopropenone complexes. X-ray crystal structure of trans-carbonylbis(triphenylphosphine)(di-tert-butylcyclopropenone)rhodium trifluoromethanesulfonate
Song, Linsheng,Arif, Atta M.,Stang, Peter J.
, p. 2792 - 2797 (2008/10/08)
Cyclopropenones 5a,b react with chlorotris(triphenylphosphine)rhodium to form trans-chlorocarbonylbis(triphenylphosphine)rhodium and acetylenes 7a,b. Reactions of 5a,b with trans-chlorocarbonylbis(triphenylphosphine)rhodium result in the formation of rhodacyclopentenediones 8a,b through the insertion of both the rhodium and the carbonyl into the three-membered ring. Di-tert-butylcyclopropenone, 5c, in contrast, does not react with chlorotris(triphenylphosphine)rhodium or trans-chlorocarbonylbis(triphenylphosphine)rhodium under similar reaction conditions. All three cyclopropenones 5a-c react with trans-carbonylbis(triphenylphosphine)rhodium trifluoromethanesulfonate (triflate) to give the cationic rhodium complexes 10a-c without ring opening. However, 5a,b yield the insertion products 12a,b when the reactions are done in benzene at ca. 60°C. The X-ray crystal structure of trans-carbonylbis(triphenylphosphine)(di-tert-butylcyclopropenone)rhodium triflate, 10c, is reported.
