4-醛基-2-甲基-苯腈

反应条件: temp:0.00; pressure:0.00; stir:

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

实验步骤: In 0.40 g of 4-formyl-2-methylbenzonitrile, 7 mL of concentrated sulfuric acid was added, and stirred at room temperature for 4.5 days. After the completion of the reaction, the reaction mixture was poured in 20 mL of ice water, extracted with ethyl acetate (15 mL×2). The combined organic phases were washed with water, and dehydrated with and dried over saturated sodium chloride aqueous solution and then anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was washed with 5 mL of diisopropyl ether to obtain 0.26 g of the aimed product as white crystal. After the completion of the reaction extracted with ethyl acetate (15 mL×2) The combined organic phases were washed with water dried over saturated sodium chloride aqueous solution anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure The residue was washed with 5 mL of diisopropyl ether

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

实验步骤: In 0.40 g of 4-formyl-2-methylbenzonitrile, 7 mL of concentrated sulfuric acid was added, and stirred at room temperature for 4.5 days. After the completion of the reaction, the reaction mixture was poured in 20 mL of ice water, extracted with ethyl acetate (15 mL×2). The combined organic phases were washed with water, and dehydrated with and dried over saturated sodium chloride aqueous solution and then anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was washed with 5 mL of diisopropyl ether to obtain 0.26 g of the aimed product as white crystal. After the completion of the reaction extracted with ethyl acetate (15 mL×2) The combined organic phases were washed with water dried over saturated sodium chloride aqueous solution anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure The residue was washed with 5 mL of diisopropyl ether

反应条件: temp:0.00; pressure:0.00; stir:

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

实验步骤: A mixture of 4-formyl-2-methylbenzonitrile (1.5 g, 10.3 mmol) and chloroacetic acid ethyl ester (1.2 g, 10 mmol) were dissolved in 60 mL of dry benzene. Freshly prepared EtONa (12.4 mmol) in 5 mL of ethanol was added, and the mixture was stirred at room temperature for 2 hours. The mixture was added water, then extracted with EtOAc. The organic layers were dried over Na2SO4 and concentrated to afford ethyl 3-(4-cyano-3-methylphenyl)oxirane-2-carboxylate. MS m/z: 232 (M+1)+. extracted with EtOAc The organic layers were dried over Na2SO4 concentrated

反应条件: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred solution of 4-bromo-2-methylbenzonitrile (4.0 g, 20 mmol) in 100 mL of anhydrous THF was added BuLi (1.6 M, 12.8 mL) dropwise at −78° C. under nitrogen atmosphere. After the addition, the pale red solution was stirred for 5 min at −78° C. and dry DMF (2.2 mL) then added dropwise. After 20 min, the reaction mixture was poured onto a saturated solution of sodium chloride (100 mL). The organic phase was separated, extracted with diethyl ether (100 mL), dried over Na2SO4 and distilled off the solvent to afford 4-formyl-2-methylbenzonitrile. MS m/z: 146 (M+1)+. After the addition After 20 min The organic phase was separated extracted with diethyl ether (100 mL) dried over Na2SO4 distilled off the solvent

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

实验步骤: In 0.40 g of 4-formyl-2-methylbenzonitrile, 7 mL of concentrated sulfuric acid was added, and stirred at room temperature for 4.5 days. After the completion of the reaction, the reaction mixture was poured in 20 mL of ice water, extracted with ethyl acetate (15 mL×2). The combined organic phases were washed with water, and dehydrated with and dried over saturated sodium chloride aqueous solution and then anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was washed with 5 mL of diisopropyl ether to obtain 0.26 g of the aimed product as white crystal. After the completion of the reaction extracted with ethyl acetate (15 mL×2) The combined organic phases were washed with water dried over saturated sodium chloride aqueous solution anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure The residue was washed with 5 mL of diisopropyl ether

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

实验步骤: In 0.40 g of 4-formyl-2-methylbenzonitrile, 7 mL of concentrated sulfuric acid was added, and stirred at room temperature for 4.5 days. After the completion of the reaction, the reaction mixture was poured in 20 mL of ice water, extracted with ethyl acetate (15 mL×2). The combined organic phases were washed with water, and dehydrated with and dried over saturated sodium chloride aqueous solution and then anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was washed with 5 mL of diisopropyl ether to obtain 0.26 g of the aimed product as white crystal. After the completion of the reaction extracted with ethyl acetate (15 mL×2) The combined organic phases were washed with water dried over saturated sodium chloride aqueous solution anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure The residue was washed with 5 mL of diisopropyl ether

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

实验步骤: In 0.40 g of 4-formyl-2-methylbenzonitrile, 7 mL of concentrated sulfuric acid was added, and stirred at room temperature for 4.5 days. After the completion of the reaction, the reaction mixture was poured in 20 mL of ice water, extracted with ethyl acetate (15 mL×2). The combined organic phases were washed with water, and dehydrated with and dried over saturated sodium chloride aqueous solution and then anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was washed with 5 mL of diisopropyl ether to obtain 0.26 g of the aimed product as white crystal. After the completion of the reaction extracted with ethyl acetate (15 mL×2) The combined organic phases were washed with water dried over saturated sodium chloride aqueous solution anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure The residue was washed with 5 mL of diisopropyl ether