Asymmetric Silaboration of Terminal Allenes Bearing α-Stereogenic Centers:  Stereoselection Based on “Reagent Control”
                                
                                    
                                        作者:Toshimichi Ohmura、Michinori Suginome                                    
                                    
                                        DOI:10.1021/ol060666j
                                    
                                    
                                        日期:2006.6.1
                                    
                                    A highly enantioface-selective silaboration of allenes having stereogenic centers at the alpha-positions of the double bonds has been achieved using a combination of a chiral silylborane(-)-2 and a chiral Pd/(R)-3 catalyst. The chiral reagent system efficiently controlled the stereochemistry of the new stereogenic centers even in the reactions of mismatched combinations.