名称:
                                Oxiranyllithium reagents: Generation from organotin precursors, addition to aldehydes and ketones, and dimerization to α,α′-dialkoxyolefins
                             
                            
                                摘要:
                                Oxiranyllithium compounds can be generated from organotin precursors by tin-lithium exchange with butyllithium in THF at -90-degrees-C.  In the presence of TMEDA, they react with aldehydes and ketones to give epoxy alcohols in good yields.  In the absence of TMEDA, they dimerize to alpha,alpha'-dialkoxyolefins.
                             
                                                            
                                    DOI:
                                    10.1016/s0040-4039(00)74841-6