2-氯-5-甲氧基苯甲醛

反应条件: temp:-40.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 4-bromo-2-chloro-1-iodo-benzene (10.0 g, 31.5 mmol) in THF (120 ml) was added 2 M solution of isopropylmagnesium chloride in THF (17.3 ml, 34.60 mmol) at −65° C. The reaction mixture was stirred at −40° C. for 20 min. After 2-chloro-5-methoxy-benzaldehyde (5.5 g, 32.20 mmol) was added, the reaction mixture was warmed to room temperature and stirred overnight. Then the solution was quenched with saturated aqueous solution of NH4Cl. The aqueous phase was extracted twice with diethyl ether. The combined organic phases were dried over MgSO4 and concentrated in vacuo. The crude material was purified by chromatography (petroleum ether/CH2Cl2 1:1) to provide title compound as a yellowish oil. the reaction mixture was warmed to room temperature stirred overnight Then the solution was quenched with saturated aqueous solution of NH4Cl The aqueous phase was extracted twice with diethyl ether The combined organic phases were dried over MgSO4 concentrated in vacuo The crude material was purified by chromatography (petroleum ether/CH2Cl2 1:1)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The title compound was prepared from 2-chloro-5-methoxybenzaldehyde, 3-aminopyrazole and ethyl 3-ketohexanoate in the same manner as in Example 25.

反应条件: temp:-40.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 4-bromo-2-chloro-1-iodo-benzene (10.0 g, 31.5 mmol) in THF (120 ml) was added 2 M solution of isopropylmagnesium chloride in THF (17.3 ml, 34.60 mmol) at −65° C. The reaction mixture was stirred at −40° C. for 20 min. After 2-chloro-5-methoxy-benzaldehyde (5.5 g, 32.20 mmol) was added, the reaction mixture was warmed to room temperature and stirred overnight. Then the solution was quenched with saturated aqueous solution of NH4Cl. The aqueous phase was extracted twice with diethyl ether. The combined organic phases were dried over MgSO4 and concentrated in vacuo. The crude material was purified by chromatography (petroleum ether/CH2Cl2 1:1) to provide title compound as a yellowish oil. the reaction mixture was warmed to room temperature stirred overnight Then the solution was quenched with saturated aqueous solution of NH4Cl The aqueous phase was extracted twice with diethyl ether The combined organic phases were dried over MgSO4 concentrated in vacuo The crude material was purified by chromatography (petroleum ether/CH2Cl2 1:1)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The title compound was prepared from 2-chloro-5-methoxybenzaldehyde, 3-aminopyrazole and ethyl 3-ketohexanoate in the same manner as in Example 25.