(3S,3aS,4R)-2-Chloro-3-phenyl-3a,4-dihydro-3H-2a-aza-dicyclopenta[cd,ij]azulene-1,4,5-tricarboxylic acid 1-ethyl ester 4,5-dimethyl ester                                                                                                                                                              在
                                                                                                                                                                                 
2,3-二氯-5,6-二氰基-1,4-苯醌                                                                                                                                  作用下,
                                                                                                                以
                                                                                         xylene                                                                                  为溶剂,
                                                                                                                                                    反应 24.0h,
                                                                                                                以17%的产率得到1-ethyl 5,6-dimethyl 2-chloro-3-phenyl-11-oxo-2aH-7,10b-methano-2a-azacyclopenta
cycloundecene-1,5,6-tricarboxylate