Methyl 1-Methylethyl 1,4-Dihydro-2,6-dimethyl-4-(3-hydroxylamino-phenyl)-3,5-pyridinedicarboxylate 、
3-三氟甲基苯甲醛 在
crude product 、 ether petroleum ether 作用下,
以to obtain 0.80 g (1.55 mmol. 78%) of 85 as a white crystalline solid的产率得到methyl 1-Methylethyl 1,4-Dihydro-2,6-dimethyl-4-{3-[(Z)-N-(3-trifluoromethylphenylmethylene)-N-oxo-λ5-azanyl]phenyl}-3,5-pyridinedicarboxylate