9-fluoro-6-oxa-2-λ6-thiabicyclo[5.4.0]undeca-7,9,11-triene 2,2-dioxide   、                                                                                      
3-hydroxy-5-[(3S)-1-methyl-2-oxo-pyrrolidin-3-yl]oxy-N-(5-methylpyrazin-2-yl)benzamide                                                                                                                                                              在
                                                                                                                                                                                 
potassium carbonate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                    反应 5.0h,
                                                                                                                以76%的产率得到3-[(2,2-dioxo-6-oxa-2-λ6-thiabicyclo[5.4.0]undeca-7,9,11-trien-9-yl)oxy]-5-[(3S)-1-methyl-2-oxo-pyrrolidin-3-yl]oxy-N-(5-methylpyrazin-2-yl)benzamide