2-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-1-oxo-2a-phenyl-2,2a,7,7a-tetrahydro-1H-3-thia-5,6,7b-triaza-cyclobuta[e]indene-4a-carboxylic acid methyl ester                                                                                                                                                                                              以
                                                                                         
甲苯                                                                                  为溶剂,
                                                                                                                                                    反应 72.0h,
                                                                                                                以85%的产率得到7-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-2-methyl-8-oxo-6-phenyl-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-3-carboxylic acid methyl ester