dimethyl-(3-cyclopropyl-1-(thiophen-2-yl)-prop-2-yn-1-ylidene)ammonium triflate 、
4-trifluoroacetyl-3-methyl-2-phenyl-1,3-oxazolium-5-olate 以
乙腈 为溶剂,
反应 3.5h,
以46%的产率得到{[4-cyclopropyl-5-(N-methylbenzamido)-6-oxo-2-trifluoromethyl-6H-pyran-3-yl](thipheny-2-yl)methylene}dimethylammonium trifluoromethanesulfonate