3-酞酰亚胺基丙酸甲酯   、                                                                                      trimethoxonium tetrafluoroborate   、                                                                                      
2-溴甲基萘                                                                                                                                                                                                                                                                                                          生成                                                 (3S,6R)-2,5-Dimethoxy-3,6-dimethyl-3-(2-methylnaphthyl)-3,6-dihydropyrazin   、                                                                                             
(3S,6S)-2,5-Dimethoxy-3,6-dimethyl-3-(2-methylnaphthyl)-3,6-dihydropyrazin   、                                                                                             (3R,6R)-2,5-Dimethoxy-3,6-dimethyl-3-(2-methylnaphthyl)-3,6-dihydropyrazin   、                                                                                             
(3R,6S)-2,5-Dimethoxy-3,6-dimethyl-3-(2-methylnaphthyl)-3,6-dihydropyrazin