164593-53-7Relevant academic research and scientific papers
[3+2]-Cycloaddition reactions of 2-phenyliodonio-5,5-dimethyl-1,3-dioxacyclohexanemethylide
Gogonas,Hadjiarapoglou
, p. 9299 - 9303 (2000)
Iodonium ylide 2, derived from dimedone, undergoes thermal [3+2]-cycloaddition with acetylenes and nitriles with Rh2(OAc)4 to form the corresponding furans and oxazoles, respectively. Photochemically 2 reacts with various alkenes to
Synthesis of oxazole and furan derivatives via Rh2(OAc)4-catalyzed C≡X bond insertion of cyclic 2-diazo-1,3-diketones with nitriles and arylacetylenes
Fan, Chenli,He, Xinwei,Zuo, Yin,Shang, Yongjia
supporting information, p. 2782 - 2792 (2018/11/06)
A convenient and efficient procedure for the synthesis of 2-substituted-6,7-dihydrobenzo[d]oxazol-4(5H)-ones and 2-aryl-6,7-dihydrobenzofuran-4(5H)-ones through a Rh2(OAc)4-catalyzed C≡X (X = N, C) insertion of cyclic 2-diazo-1,3-diketones with nitriles and aromatic alkynes has been developed. This reaction uses readily available starting materials and stable cyclic 2-diazo-1,3-diketone compounds, with desired products formed in good to high yields. A tentative mechanism involving a C≡X bond insertion and 1,5-dipolar electrocyclization/ring opening and cyclization sequence for this reaction is proposed.
Rationally designed ligands for asymmetric iridium-catalyzed hydrogenation of olefins
Kaellstroem, Klas,Hedberg, Christian,Brandt, Peter,Bayer, Annette,Andersson, Pher G.
, p. 14308 - 14309 (2007/10/03)
A new class of chiral N,P-ligands for the Ir-catalyzed asymmetric hydrogenation of aryl alkenes has been developed. These new ligands proved to be highly efficient and tolerates a broad range of substrates. The enantiomeric excesses are in the range of the best ever reported. The results can be rationalized with the proposed selectivity model. Copyright
