2,5-二甲氧基-3-四氢呋喃缩醛   、                                                                                      
ethyl 7-amino-6-fluoro-3-oxo-1,2,3,4-tetrahydroquinoxaline-2-carboxylate                                                                                                                                                                                              以
                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                    反应 3.0h,
                                                                                                                以to obtain 333 mg of title compound as yellow powder的产率得到ethyl 7-(3-formylpyrrole-1-yl)-6-fluoro-3-oxo-1,2,3,4-tetrahydroquinoxaline-2-carboxylate