名称:
                                Phenylisothiocyanate in der Heterocyclensynthese: Neue Synthesen f�r Thiazol-, Thieno [2,3-b]pyridin-, Thiophen- und Thieno[3,2-c]pyridazin-Derivate
                             
                            
                                摘要:
                                The enamino nitrites 1 and 2 react with phenyl isothiocyanate followed by cyclization with alpha-haloketones 3 and 10 to afford in each case the thiazole 5, thiophene 11 and the thieno[2,3b] pyridine derivatives 19 and 21. Chemical and spectroscopic evidences for the structures of the new compounds are described.