名称:
                                Bifunctional chiral auxiliaries 4: Alkylation of enolates derived from 1,3-diacyl-trans-4,5-tetramethyleneimidazolidin-2-ones
                             
                            
                                摘要:
                                Addition of alkyl halides to sodium and potassium enolates of 1,3-diacyl-trans-4,5-tetramethyleneimidazolidin-2-ones allows diastereoselective alkylation of both acyl sidechains with the latter enolates showing generally higher stereoselectivities.  S-(-)-3-Phenyl-2-methylpropan-1-ol 6 was prepared in this way with a 93% enantiomeric excess.
                             
                                                            
                                    DOI:
                                    10.1016/s0040-4039(00)91875-6