2-hydroxy-1-methoxy-5-methyl-3-(2-methyl-6-trifluoromethyl-pyridine-3-carbonyl)-4-oxo-cyclohex-2-ene-carboxylic acid methyl ester   、                                                                                      
氢氧化钾                                                                                                                                                              在
                                                                                                                                                                                 
乙酸乙酯                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
dioxane-water                                                                                  为溶剂,
                                                                                                                                                    反应 3.0h,
                                                                                                                以3-Hydroxy-4-methoxy-6-methyl-2-(2-methyl-6-trifluoromethyl-pyridine-3-carbonyl)cyclohex-2-enone is obtained as a viscous oil (的产率得到3-hydroxy-4-methoxy-6-methyl-2-(2-methyl-6-trifluoromethyl-pyridine-3-carbonyl)-cyclohex-2-enone