2-(7-chloro-[1,8]naphthyridin-2-yl)-3-phenoxycarbonyloxy-2,3-dihydro-isoindol-1-one   、                                                                                      
仲丁胺                                                                                                                                                              在
                                                                                                                                                                                 
乙腈                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
异丙醚                                                                                  为溶剂,
                                                                                                                                                                                        以2-(7-Chloro-1,8-naphthyridin-2-yl)-3-sec-butylaminocarbonyloxy-isoindolin-1-one (3 g.), melting at 220°-222° C., is thus obtained的产率得到3-
sec-butylcarbamoyloxy-2-(7-chloro-[1,8]naphthyridin-2-yl)-2,3-dihydro-isoindol-1-one