2-Methylene4-morpholin-4-yl-4-oxo-butyric acid   、                                                                                      
1,1-dimethylethanesulphinic acid   、                                                                                      
乙腈                                                                                                                                                              在
                                                                                                                                                                                 
methanol-dichloromethane   、                                                                                                  product   、                                                                                                  
乙醚                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲苯                                                                                  为溶剂,
                                                                                                                                                    反应 37.5h,
                                                                                                                以to give 2-(2-Methyl-propane-1-sulfonylmethyl)-4-morpholin-4-yl-4-oxo-butyric acid as a white solid (1.8 g)的产率得到2-(2-Methyl-propane-1-sulfonylmethyl)-4-morpholin-4-yl-4-oxo-butyric acid