1-methyl-1,4-dihydrochromeno[4,3-c]pyrazole-3-carboxylic acid   、                                                                                      
草酰氯   、                                                                                      
吡啶   、                                                                                      
2-氨基-4-氯吡啶                                                                                                                                                              在
                                                                                                                                                                                 
N-(4-chloropyridin-2-yl)-1-methyl-1,4-dihydrochromeno[4,3-c]pyrazole-3-carboxamide                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以The title compound was obtained as a white solid with puritiy greater than 95% (25.4 mg, 0.07 mmol, 14% yield)的产率得到N-(4-chloropyridin-2-yl)-1-methyl-1,4-dihydrochromeno[4,3-c]pyrazole-3-carboxamide