2,4-bis(1-ethyl-2-methyl-3-indolyl)-4-oxobutanoic acid 在
乙酸酐 、
3,5-bis(1-ethyl-2-methyl-3-indolyl)-2(3H)-furanone 作用下,
以
乙酸酐 为溶剂,
反应 17.0h,
以there was obtained 34.0 g of 3,5-bis(1-ethyl-2-methyl-3-indolyl)-2(3H)-furanone (Formula II: R=CH3CH2 ; R1 =CH3 ; Y=H) as a white solid which的产率得到3,5-bis(1-ethyl-2-methyl-3-indolyl)-2(3H)-furanone