作者:Yujiro Hayashi、Mitsuru Shoji、Satoshi Kishida                                    
                                    
                                        DOI:10.1016/j.tetlet.2004.11.119
                                    
                                    
                                        日期:2005.1
                                    
                                    Sodium benzoate reacts with alpha-halo-alpha,beta-enones in the presence of tetrabutylammonium hydrogensulfate or 18-Crown-6 to afford alpha- and/or gamma-benzoyloxy-alpha,beta-enones in good yield. The alpha/gamma and gamma/gamma' selectivities are dependent on the Substrate and reagent. (C) 2004 Elsevier Ltd. All rights reserved.