2-hydroxy-3-(4-methylchroman-4-yl)-2-trifluoro-methylpropionaldehyde 、
5-氨基-2-氧代-1,2-二氢喹啉 以to yield a corresponding 5-{[2-hydroxy-3-(4-methylchroman-4-yl)-2-(trifluoromethyl)propylidene]amino}quinolin-2(1H)-one的产率得到5-{[2-hydroxy-3-(4-methylchroman-4-yl)-2-(trifluoromethyl)-propylidene]amino}quinolin-2(1H)-one