trans-4-Morpholinocyclohexanol   、                                                                                      
ethyl 4-chloro-6-methyl-7,8-dihydro-5H-[1]benzothiolo[2,3-d]pyrimidine-6-carboxylate                                                                                                                                                              在
                                                                                                                                                                                 
sodium hexamethyldisilazane                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                以30%的产率得到ethyl 6-methyl-4-(((1r,4r)-4-morpholinocyclohexyl)oxy)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidine-6-carboxylate