Synthesis of 6-(arylmethylidene)octahydropyrrolo[1,2-a]pyrimidines and 5-(arylmethylidene)hexahydropyrrolo[1,2-a]imidazoles by the interaction of alk-4-ynals with a,?-diaminoalkanes in DMSO in the presence of KOH
                                
                                    
                                        作者:Konstantin N. Shavrin、Valentin D. Gvozdev、Oleg M. Nefedov                                    
                                    
                                        DOI:10.1016/j.mencom.2013.05.006
                                    
                                    
                                        日期:2013.5
                                    
                                    Cyclization of alk-4-ynals with alpha,omega-diaminoalkanes in DMSO under the action of KOH affords bicyclic N,N-enaminals - 6-(arylmethylidene)octahydro[1,2-a]pyrimidines and 5-(arylmethylidene)hexahydro[1,2-a]imidazoles.