dimethyl-(3-cyclopropyl-1-phenylprop-2-yn-1-ylidene)ammonium trifluoromethanesulfonate 、
4-trifluoroacetyl-3-methyl-2-phenyl-1,3-oxazolium-5-olate 以
乙腈 为溶剂,
反应 3.5h,
以59%的产率得到{[4-cyclopropyl-5-(N-methylbenzamido)-6-oxo-2-trifluoromethyl-6H-pyran-3-yl](phenyl)methylene}dimethylammonium trifluoromethanesulfonate