(2-amino-4,7-dihydro-5H-thieno[2,3-c]pyran-3-yl)-phenyl-methanone 、
环丙甲酰丙酮 在
硫酸 ethyl acetate heptane 作用下,
以
溶剂黄146 为溶剂,
反应 2.0h,
以Flash chromatography (heptane/ethyl acetate 3:1) afforded 50 mg (37%) cyclopropyl-(2-methyl-4-phenyl-5,8-dihydro-6H-7-oxa-9-thia-1-aza-fluoren-3-yl)-methanone as a yellow solid的产率得到cyclopropyl-(2-methyl-4-phenyl-5,8-dihydro-6H-7-oxa-9-thia-1-aza-fluoren-3-yl)-methanone