名称:
                                Synthesis of Pyrano[4,3-b]benzodiazepine and Pyrano[4,3-b]quinoline Using 4-Chloro-3-(1-chlorovinyl)-6-methyl-2H-pyran-2-one and 4-Chloro-3-ethynyl-6-methyl-2H-pyran-2-one
                             
                            
                                摘要:
                                Reaction of dichloropyrone (1) and chloroethynylpyrone (2) with o-phenylenediamine and m-phenylenediamine give pyranobenzodiazepine (3) and pyranoquinoline (5), respectively. Treatment of 1 and 2 with p-phenylenediamine yield aminoethynylpyrone (6), which is a key product in the reaction of 1 and 2 with phenylenediamines.