197219-29-7Relevant academic research and scientific papers
A comparative study of the Au-catalyzed cyclization of hydroxy-substituted allylic alcohols and ethers
Biannic, Berenger,Ghebreghiorgis, Thomas,Aponick, Aaron
, p. 802 - 807 (2011/07/30)
The Au(I)-catalyzed cyclization of hydroxyallylic ethers to form tetrahydropyrans is reported. Employing (acetonitrile)[(o-biphenyl) di-tert-butylphosphine]gold(I) hexafluoroantimonate, the cyclization reactions were complete within minutes to hours, depending on the substrate. The reaction progress was monitored by GC, and comparisons between substrates demonstrate that reactions of allylic alcohols are faster than the corresponding ethers. Additionally, it is reported that Reaxa QuadraPure MPA is an efficient scavenging reagent that halts the reaction progress.
Cascade polycyclization: Exploration of a convergent route to access various tricyclic and tetracyclic products related to sterols
Guay, Benoit,Deslongchamps, Pierre
, p. 6140 - 6148 (2007/10/03)
The expedient synthesis of tricyclic and tetracyclic compounds via a cascade polycyclization methodology is described. Nazarov substrates (II) containing two Michael acceptors and a cyclohexenone ester (I) underwent cycloaddition followed by intramolecula
The biomimetic construction of fused cyclic polyethers
Hayashi, Nobuyuki,Fujiwara, Kenshu,Murai, Akio
, p. 12425 - 12468 (2007/10/03)
The formation of fused cyclic ethers by biomimetic synthesis was demonstrated. The one-pot successive ring-expansion reactions of bromo diepoxides were investigated by regarding the epoxy groups as the nucleophiles for the intramolecular cationic carbons to obtain the fused cyclic ethers.
