(E)-4-Methyl-5-phenyl-pent-4-enoic acid 2-(3-ethyl-6-methoxy-5-methyl-4-oxo-4H-pyran-2-yl)-2-oxo-ethyl ester                                                                                                                                                              在
                                                                                                                                                                                 ammonium acetate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
溶剂黄146                                                                                  为溶剂,
                                                                                                                                                    反应 24.0h,
                                                                                                                以42%的产率得到3-Ethyl-6-methoxy-5-methyl-2-[2-((E)-3-methyl-4-phenyl-but-3-enyl)-oxazol-5-yl]-pyran-4-one