(5-[1-(t-butyldimethylsiloxy)vinyl]-3-{[2-(4-fluorophenyl)ethyl]-methylsulfamoyl}thiophene-2-yl)carbamic acid t-butyl ester   、                                                                                      
丙烯腈                                                                                                                                                              在
                                                                                                                                                                                 silica gel   、                                                                                                  
ethyl acetate n-hexane                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
邻二甲苯                                                                                  为溶剂,
                                                                                                                                                    反应 0.5h,
                                                                                                                以(4-cyano-3-{[2-(4-fluorophenyl)ethyl]methylsulfamoyl}-7-t-butyl-dimethylsiloxy-4,5,6,7-tetrahydrobenzo[b]thiophene-2-yl)carbamic acid t-butyl ester (54 mg) was obtained as a mixture的产率得到(4-cyano-3-{[2-(4-fluorophenyl)ethyl]methylsulfamoyl}-7-t-butyl-dimethylsiloxy-4,5,6,7-tetrahydrobenzo[b]thiophene-2-yl)carbamic acid t-butyl ester