1,4-dihydrochromeno[4,3-c]pyrazole-3-carboxylic acid   、                                                                                      
草酰氯   、                                                                                      
吡啶   、                                                                                      
2-氨基-6-甲基吡啶                                                                                                                                                              在
                                                                                                                                                                                 
N-(6-methylpyridin-2-yl)-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% (1.6 mg, 0.005 mmol, 0.6% yield)的产率得到N-(6-methylpyridin-2-yl)-1,4-dihydrochromeno[4,3-c]pyrazole-3-carboxamide