2-methoxy-N-[(3R,4R)-3-methylpiperidin-4-yl]-N-phenylpropanamide   、                                                                                      alkaline earth salt of/the/ methylsulfuric acid                                                                                                                                                              在
                                                                                                                                                                                 
sodium carbonate   、                                                                                                  sodium iodide                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 N-[(3R,4R)-1-[2-(4-ethyl-5-oxotetrazol-1-yl)ethyl]-3-methylpiperidin-4-yl]-2-methoxy-N-phenylpropanamide