名称:
                                Synthesis of carbamoylpyridine and imidazo[1,5-a]pyridin-1,3-diones via ortho-acetalhydantoin intermediates
                             
                            
                                摘要:
                                A new method for preparing carbamoylpyridine and imidazo[1,5-a]pyridin-1,3-dione rings from an ortho-acetalmethylideneimidazolidin-2,4-dione is described. (C) 2003 Published by Elsevier Ltd.
                             
                                                            
                                    DOI:
                                    10.1016/j.tetlet.2003.10.200