乙醇   、                                                                                      
N-benzoyl-N'-[4-cyano-1-(5,6-dihydronaphtho[1',2':4,5]thieno[2,3-d]pyrimidin-11-yl)-1H-pyrazol-5-yl]thiourea                                                                                                                                                              在
                                                                                                                                                                                 
sodium hydroxide                                                                                                                                  作用下,
                                                                                                                                                                                        反应 4.0h,
                                                                                                                以55%的产率得到4-amino-1-(5,6-dihydronaphtho[1',2':4,5]thieno[2,3-d]pyrimidin-11-yl)-1H-pyrazolo[3,4-d]pyrimidin-6(5H)-thione