672903-58-1Relevant academic research and scientific papers
Palladium(II)-catalyzed cyclization using molecular oxygen as reoxidant
Roenn, Magnus,Baeckvall, Jan-E.,Andersson, Pher G.
, p. 7749 - 7752 (1995)
A palladium(II)-catalyzed intramolecular allylic oxidations using, nitrogen and oxygen nucleophiles and molecular oxygen as reoxidant has been developed.
Catalyst free annulative thioboration of unfunctionalized olefins
Yang, Zhantao,Yang, Chun-Hua,Chen, Shiqi,Chen, Xixi,Zhang, Litian,Ren, Huijun
supporting information, p. 12092 - 12095 (2017/11/14)
A direct and catalyst-free annulative thioboration of unfunctionalized olefins has been developed. In the presence of BCl3 as the sole boron source, the boryl group and thiol group are added to the C-C double bonds simultaneously. The boronic acids obtained can be protected to form synthetically ubiquitous pinacol boronate esters.
FORMATION DE CYCLOPENTANES A PARTIR DE MALONATES δ-ETHYLENIQUES PAR UN PROCESSUS CATALYTIQUE EN PALLADIUM(0). STEREOCHIMIE ET MECANISME
Balme, Genevieve,Bouyssi, Didier,Faure, Rene,Gore, Jacques,Hemelryck, Bruno van
, p. 3891 - 3902 (2007/10/02)
The treatment of the enolate of a δ-ethylenic malonate with an unsaturated iodide in the presence of a palladium(0) complex leads stereospecifically to a cyclopentane with the simultaneous formation in a trans fashion of the two carbon-carbon bonds.All th
Sulphonate Esters as Sources of Sulphonyl Radicals; Ring-closure Reactions of Alk-4- and -5-enesulphonyl Radicals
Culshaw, Peter N.,Walton, John C.
, p. 1201 - 1208 (2007/10/02)
Alkyl alkanesulphonates and arenesulphonates were found to be useful sources of sulphonyl radicals, particularly for spectroscopic work, when treated with organotin or organosilyl radicals.Allyl, propynyl and penta-2,4-dienyl methanesulphonates gave, however, allyl, propynyl and pentadienyl radicals, respectively.Sulphonyl radicals generated in this way added efficiently to alk-1-enes with electron-releasing substituents, and the EPR spectra of the adduct radicals were recorded.A variety of radical initiation systems were tried on pent-4-enesulphonyl chloride.The pent-4-enesulphonyl radical cyclised mainly in the endo mode to give the six-membered-ring sulphone.Similarly, the hex-5-enesulphonyl radical cyclised to give thiepane 1,1-dioxide, with a seven-membered ring.The cyclohex-2-enylethanesulphonyl radical cyclised mainly in the exo mode to give 2-chloro-9-thiabicyclononane 9,9-dioxide.The mechanisms of these reactions are discussed.
