描述:
                                
                                                                                                                         (1S,2R,6S,7S)-4,4-Dimethyl-1-trifluoromethyl-3,5-dioxa-tricyclo[5.2.2.02,6]undeca-8,10-diene-8,9-dicarboxylic acid dimethyl ester                                                                                                                                                                                                                                                                      反应 48.0h,
                                                                                                                以73%的产率得到(1S,2R,6S,7S)-4,4-Dimethyl-1-trifluoromethyl-3,5-dioxa-tricyclo[5.2.2.02,6]undeca-8,10-diene-8,9-dicarboxylic acid 9-methyl ester