Medium Buffer Effects on the Condensation of l-Cysteine and Aryl Nitriles to (R)-2-Aryl-4,5-dihydrothiazole-4-carboxylic Acids
                                
                                    
                                        作者:Lukas Hintermann、Oleg Maltsev、Valérianne Walter、Matthias Brandl                                    
                                    
                                        DOI:10.1055/s-0033-1339492
                                    
                                    
                                        日期:——
                                    
                                    The condensation of L-cysteine and aryl nitriles to (R)-2-aryl-4,5-dihydrothiazole-4-carboxylic acids in buffered media was reinvestigated. Pure products (yields of 58-95%; up to 99% ee) were obtained in a NaHCO3/NaOH-buffered aqueous alcoholic medium.