Functionalized organozincates and organocuprates derived from γ-hydroxytellurides in the preparation of 1,4-hydroxyketones
                                
                                    
                                        作者:Jefferson L. Princival、Alcindo A. Dos Santos、João V. Comasseto                                    
                                    
                                        DOI:10.1016/j.tetlet.2009.08.097
                                    
                                    
                                        日期:2009.11
                                    
                                    A C-O-dianionic zincate was generated by a Te/Li exchange reaction of an alkyltelluride, followed by Li/Zn transmetallation and reaction with methyllithium. The reaction between the enantiomerically pure (99% ee) (R)-dianionic zincate and benzoyl chloride led to 3-hydroxy-1-phenyl pentanone with total retention of the carbon configuration (99% ee). Similar results were obtained using the corresponding Lipshutz cyanocuprates. (C) 2009 Elsevier Ltd. All rights reserved.