5-amino-2-methyl-phthalazin-1-one 、
4-(3-fluoro-2-methoxy-4-methylphenyl)-2-hydroxy-4-methyl-2-trifluoromethyl-pentanal 在
titanium(IV) isopropylate 作用下,
以
xylene 为溶剂,
反应 5.0h,
以68.5%的产率得到rac-5-{[4-(3-fluoro-2-methoxy-4-methylphenyl)-2-hydroxy-4-methyl-2-trifluoromethylpentylidene]amino}2-methyl-phthalazinon-1-one