3-[4-(4-cyano-phenyl)-[1,2,3]triazol-1-ylmethyl]-benzoic acid   、                                                                                      
tert-butyl (R)-(2-amino-4,5,6,7-tetrahydrobenzo[1,2-d]thiazol-6-yl)carbamate                                                                                                                                                              在
                                                                                                                                                                                 
2-(1H-Benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate                                                                                                                                  作用下,
                                                                                                                                                                                                                            以to give ((R)-2-{3-[4-(4-cyano-phenyl)-1,2,3-triazol-1-ylmethyl]-benzoylamino}-4,5,6,7-tetrahydro-benzothiazol-6-yl)-carbamic acid tert-butyl ester的产率得到((R)-2-{3-[4-(4-cyano-phenyl)-1,2,3-triazol-1-ylmethyl]-benzoylamino}-4,5,6,7-tetrahydro-benzothiazol-6-yl)-carbamic acid tert-butyl ester