(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