2-(5-bromomethyl-2,3-dimethoxy-phenyl)-thiophene   、                                                                                      
4-[(tert-butyl-dimethyl-silanyloxy)-cyano-methyl]-benzoic acid methyl ester                                                                                                                                                              在
                                                                                                                                                                                 
lithium hexamethyldisilazane                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 2.17h,
                                                                                                                以70%的产率得到4-[1-(tert-butyl-dimethyl-silanyloxy)-1-cyano-2-(3,4-dimethoxy-5-thiophen-2-yl-phenyl)-ethyl]-benzoic acid methyl ester