2-Methyl-3-(4-oxo-cyclohexa-2,5-dienylideneamino)-3,5,6,7-tetrahydro-cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-one; compound with acetic acid                                                                                                                                                              在
                                                                                                                                                                                 sodium disulfite                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
1,4-二氧六环                                                                                  为溶剂,
                                                                                                                                                    反应 0.25h,
                                                                                                                以85%的产率得到3-(4-Hydroxy-phenylamino)-2-methyl-3,5,6,7-tetrahydro-cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-one