2-甲氧基丙胺盐酸盐   、                                                                                      2-{[1-(tert-butoxycarbonyl)azetidin-3-yl]methyl}-6-methyl-2H-indazol-5-carboxylic acid                                                                                                                                                              在
                                                                                                                                                                                 
N,N-二异丙基乙胺   、                                                                                                  N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二甲基亚砜                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                以358 mg的产率得到(±)-tert-butyl 3-({5-[N-(2-methoxypropyl)carbamoyl]-6-methyl-2H-indazol-2-yl}methyl)azetidin-1-carboxylate