(1R,2R)-(1-hydroxycyclopentan-2-yl)methyl crotonate   、                                                                                      alkaline earth salt of/the/ methylsulfuric acid                                                                                                                                                                                              以
                                                                                         
乙醚                                                                                  为溶剂,
                                                                                                                                                    反应 0.5h,
                                                                                                                生成                                                 (1'R,2'R,3R)-(1'-hydroxycyclopentan-2'-yl)methyl 3-phenylbutanoate   、                                                                                             (1'R,2'R,3S)-(1'-hydroxycyclopentan-2'-yl)methyl 3-phenylbutanoate