反应详情

5-n-Pentyl resorcinol is reacted with methyl 5-methyl-3-oxo-tetrahydrothiophene-2-carboxylate to produce 1,2-dihydro-9-hydroxy-2-methyl-7-n-pentyl-4-oxo-4H-thieno[2,3-c][1] benzopyran, m.p. 188°-190°C, in 62% yield.