2,6-di(propan-2-yl)benzaldehyde

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 6.8 ml of a 1.6M solution of butyllithium in hexane was added dropwise at -78° C. while stirring to a solution of 2.6 g of 2-bromo-1,3-diisopropylbenzene in 16 ml of tetrahydrofuran. The mixture was stirred at the same temperature for 30 minutes and thereafter treated with a solution of 1.3 g of N-formylpiperdine in 1.5 ml of tetrahydrofuran. Thereafter, the mixture was left to warm to room temperature over a period of 6 hours. The mixture was cooled to 0° C. and treated with 12 ml of 3N hydrochloric acid. The aqueous solution was extracted four times with diethyl ether and the combined organic extracts were washed with saturated sodium chloride solution, dried over anhydrous magnesium sulphate and evaporated to dryness. The residue was chromatographed on silica gel with dichloromethane as the eluent and yielded 1.07 g of 2,6-diisopropylbenzaldehyde as an oil. Thereafter, the mixture was left The mixture was cooled to 0° C. The aqueous solution was extracted four times with diethyl ether the combined organic extracts were washed with saturated sodium chloride solution dried over anhydrous magnesium sulphate evaporated to dryness The residue was chromatographed on silica gel with dichloromethane as the eluent

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 6.8 ml of a 1.6M solution of butyllithium in hexane was added dropwise at -78° C. while stirring to a solution of 2.6 g of 2-bromo-1,3-diisopropylbenzene in 16 ml of tetrahydrofuran. The mixture was stirred at the same temperature for 30 minutes and thereafter treated with a solution of 1.3 g of N-formylpiperdine in 1.5 ml of tetrahydrofuran. Thereafter, the mixture was left to warm to room temperature over a period of 6 hours. The mixture was cooled to 0° C. and treated with 12 ml of 3N hydrochloric acid. The aqueous solution was extracted four times with diethyl ether and the combined organic extracts were washed with saturated sodium chloride solution, dried over anhydrous magnesium sulphate and evaporated to dryness. The residue was chromatographed on silica gel with dichloromethane as the eluent and yielded 1.07 g of 2,6-diisopropylbenzaldehyde as an oil. Thereafter, the mixture was left The mixture was cooled to 0° C. The aqueous solution was extracted four times with diethyl ether the combined organic extracts were washed with saturated sodium chloride solution dried over anhydrous magnesium sulphate evaporated to dryness The residue was chromatographed on silica gel with dichloromethane as the eluent

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 6.8 ml of a 1.6M solution of butyllithium in hexane was added dropwise at -78° C. while stirring to a solution of 2.6 g of 2-bromo-1,3-diisopropylbenzene in 16 ml of tetrahydrofuran. The mixture was stirred at the same temperature for 30 minutes and thereafter treated with a solution of 1.3 g of N-formylpiperdine in 1.5 ml of tetrahydrofuran. Thereafter, the mixture was left to warm to room temperature over a period of 6 hours. The mixture was cooled to 0° C. and treated with 12 ml of 3N hydrochloric acid. The aqueous solution was extracted four times with diethyl ether and the combined organic extracts were washed with saturated sodium chloride solution, dried over anhydrous magnesium sulphate and evaporated to dryness. The residue was chromatographed on silica gel with dichloromethane as the eluent and yielded 1.07 g of 2,6-diisopropylbenzaldehyde as an oil. Thereafter, the mixture was left The mixture was cooled to 0° C. The aqueous solution was extracted four times with diethyl ether the combined organic extracts were washed with saturated sodium chloride solution dried over anhydrous magnesium sulphate evaporated to dryness The residue was chromatographed on silica gel with dichloromethane as the eluent