Oxidation of Benzylic Alcohols and Ethers to Carbonyl Derivatives by Nitric Acid in Dichloromethane
作者:Paolo Strazzolini、Antonio Runcio
DOI:10.1002/ejoc.200390090
日期:2003.2
Nitricacid in dichloromethane may be successfully employed for the oxidation of benzylic alcohols and ethers to the corresponding carbonyl compounds. The proposed method proved to be of general applicability, affording very good yields of aldehydes and ketones and showing interesting chemoselectivity in many instances, allowing competitive aromatic nitration to be avoided, as well as − in the case
Synthesis of Bicyclic Thiazolidinethiones and Oxazolidinones by Water-Mediated Multicomponent Reactions (MCR) and Ring-Closing Metathesis (RCM)
作者:Timo Stalling、Wolfgang Saak、Jürgen Martens
DOI:10.1002/ejoc.201301162
日期:2013.12
Starting with the development of new multicomponent reactions (MCR) in water, hydroxy thiazolidinethiones and oxazolidinones were prepared efficiently in a one-pot procedure. The reaction was carried out under mild conditions, consistent with the principles of “green chemistry”. These precursors were converted into different dienes containing terminal C–C double bonds by modifying the hydroxy group
1-Hetero substituted 6,11-ethano-6,11-dihydrobenzo[b]quinolizinium salts, pharmaceutical compositions containing them, and methods for the treatment or prevention of neurodegenerative disorders or neurotoxic injuries utilizing them.
Diels-AIder Reactions of 5,5,5-Trichloro-3-penten-2-one and Related Compounds
作者:Sadao Tsuboi、Yasuhiro Ishiguro、Akira Takeda
DOI:10.1246/bcsj.47.1673
日期:1974.7
The Diels-AIder reaction of 5,5,5-trichloro-3-penten-2-one (1a) with cyclopentadiene afforded exo-2-acetyl-endo-3-trichloromethylbicyclo[2.2.1]hept-5-ene (2a) stereoselectively. The stereochemistry of the reactions of cyclopentadiene with several γ-chlorinated α,β-unsaturated ketones was examined. The endo-directive abilities decreased in the following order: CCl3>CCl2CH3, CHCl2, CCl(CH3)2>CH(CH3)2>CH3
作者:Jean-Pierre Senet、Gérard Sennyey、Gary P. Wooden
DOI:10.1055/s-1988-27597
日期:——
Alkyl (or alkenyl or aryl) 1-haloalkyl carbonates are conveniently prepared by reaction of an aldehyde with an alkyl (or alkenyl or aryl) carbonohalidate (haloformate) in the presence of a catalyst.