7505-94-4Relevant articles and documents
Chemistry of the S=O Bond 8-A Stereochemical Investigation of Some Methyl-Substituted Trimethylene Sulphites (1,3,2-Dioxathian 2-oxides) via (13)C Nuclear Magnetic resonance
Hellier, Desmond G.,Phillips, Andrew M.
, p. 178 - 184 (1982)
(13)C NMR chemical shifts for trimethylene sulphite and 35 derivatives are presented.From the magnitudes of the β shifts it has been possible to establish chemical shift additivity relationships for a series of compounds.The results are discussed in terms of probable conformations in solution.
The rhodium-catalyzed carbene cyclization cycloaddition cascade reaction of vinylsulfonates
Shi, Bairu,Merten, Sandra,Wong, David K. Y.,Chu, John C. K.,Liu, Lok Lok,Lam, Sze Kui,J?ger, Anne,Wong, Wing-Tak,Chiu, Pauline,Metz, Peter
supporting information; experimental part, p. 3128 - 3132 (2010/04/24)
Vinylsulfonates have proved to be excellent dipolarophiles for carbonyl ylides derived from diazoketones in rhodium-catalyzed intramolecular cycloadditions. Polyfunctional substrates, such as 8 and (+)-15, were readily available from hydroxy esters, e.g. 1 and the cyclopenta-1,3-dione 10, respectively, and the resulting polycyclic sultones were formed under mild reaction conditions in high yields with very good diastereoselectivities. A ruthenium-catalyzed asymmetric transfer hydrogenation was found to desymmetrize the meso-cyclopenta-1,3-dione 12 efficiently.
Boron Trifluoride Promoted Aldol Reaction of Silyl Ketene Acetals with the Intermediate Generated by the DIBALH Reduction of Carboxylic Acid Esters
Kiyooka, Syun-ichi,Shirouchi, Masashi
, p. 1 - 2 (2007/10/02)
The intermediate generated by the DIBALH reduction of carboxylic acid esters undergoes a boron trifluoride promoted aldol reaction with silyl ketene acetals to afford the corresponding β-hydroxy carboxylic acid esters in good yield.
