Screening Rhodium Metallopeptide Libraries “On Bead”: Asymmetric Cyclopropanation and a Solution to the Enantiomer Problem
                                
                                    
                                        作者:Ramya Sambasivan、Zachary T. Ball                                    
                                    
                                        DOI:10.1002/anie.201202512
                                    
                                    
                                        日期:2012.8.20
                                    
                                    Searching with a beady eye: A high‐throughput, on‐bead screen of rhodium metallopeptide catalysts was developed in a 96‐well format for asymmetric cyclopropanation. Different sequences of natural L‐amino acids have been identified that produce opposite product enantiomers (see picture). In addition to styrene derivatives, high enantioselectivity is observed for vinyl ether and vinyl amine derivatives
                                    用大眼睛搜索:以96孔格式开发了高通量,
金属
铑金属
铑催化剂的不对称
环丙烷化筛。已鉴定出产生相反产物对映异构体的天然L-
氨基酸的不同序列(参见图片)。除
苯乙烯衍
生物外,
乙烯基醚和
乙烯基胺衍
生物的对映选择性也很高。