4-(6-oxo-5,6,7,8-tetrahydronaphthalen-2-yl)benzonitrile   、                                                                                      
碳酸二乙酯                                                                                                                                                                                                                                                                                                          以ethyl 6-(4-cyanophenyl)-2-oxo-1,2,3,4-tetrahydronaphthalene-1-carboxylate was obtained as a colorless solid in 41% yield的产率得到ethyl 6-(4-cyanophenyl)-2-oxo-1,2,3,4-tetrahydronaphthalene-1-carboxylate