2-(diethoxymethyl)benzaldehyde

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 2.5 ml of diisopropylamine in 20 ml of dry tetrahydrofuran at −78° C. was added 11 ml of a 1.6 M solution of butyllithium in hexanes. The solution was stirred for 20 min. then a solution of 1.15 g of 2-fluoropyridine in 3 ml of tetrahydrofuran was added. The solution was stirred at −78° C. for 30 min then a solution of 2-formylbenzaldehyde diethylacetal in 3 ml of tetrahydrofuran was added dropwise. This solution was stirred for 1 h then warmed to room temperature overnight. The reaction was poured into a 5% solution of sodium carbonate and extracted with two 300 ml portions of ether. The combined organic layers were washed with 300 ml of water then the same volume of brine and dried over sodium sulfate. Evaporation of the solvent afforded (2-fluoropyridin-3-yl)-2-(diethoxymethyl)-phenylmethanol as a viscous oil; 1H-NMR (200 MHz, CDCl3) d 5.60 (CHOEt). The solution was stirred at −78° C. for 30 min This solution was stirred for 1 h extracted with two 300 ml portions of ether The combined organic layers were washed with 300 ml of water the same volume of brine and dried over sodium sulfate Evaporation of the solvent

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 10.4 g of 2-bromobenzaldehyde diethyl acetal in 200 ml of dry diethyl ether at −65° C. was added 27.5 ml of a 1.6 M solution of butyllithium in hexanes. The solution was stirred at this temperature for 30 min. then slowly warmed to −40° C. when 3.4 ml of dimethylformamide was added dropwise. The reaction was warmed to room temperature then 100 ml of water was added and the organic layer was separated. The aqueous layer was extracted with two 100 ml portions of ether and the combined organic extracts were dried over sodium sulfate and evaporated to give 8.5 g of 2-formylbenzaldehyde diethylacetal as an oil; 1H-NMR (200 MHz, CDCl3) d 5.06 (CHOEt). was added dropwise the organic layer was separated The aqueous layer was extracted with two 100 ml portions of ether the combined organic extracts were dried over sodium sulfate evaporated

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 2.5 ml of diisopropylamine in 20 ml of dry tetrahydrofuran at -78° C. was added 11 ml of a 1.6 M solution of butyllithium in hexanes. The solution was stirred for 20 min. then a solution of 1.15 g of 2-fluoropyridine in 3 ml of tetrahydrofuran was added. The solution was stirred at -78° C. for 30 min then a solution of 2-formylbenzaldehyde diethylacetal in 3 ml of tetrahydrofuran was added dropwise. This solution was stirred for 1 h then warmed to room temperature overnight. The reaction was poured into a 5% solution of sodium carbonate and extracted with two 300 ml portions of ether. The combined organic layers were washed with 300 ml of water then the same volume of brine and dried over sodium sulfate. Evaporation of the solvent afforded (2-fluoropyridin-3-yl)-2-(diethoxymethyl)-phenyl methanol as a viscous oil; 1H-NMR (200 MHz, CDCl3) d 5.60 (CHOEt). The solution was stirred at -78° C. for 30 min This solution was stirred for 1 h extracted with two 300 ml portions of ether The combined organic layers were washed with 300 ml of water the same volume of brine and dried over sodium sulfate Evaporation of the solvent

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 10.4 g of 2-bromobenzaldehyde diethyl acetal in 200 ml of dry diethyl ether at -65° C. was added 27.5 ml of a 1.6 M solution of butyllithium in hexanes. The solution was stirred at this temperature for 30 min. then slowly warmed to -40° C. when 3.4 ml of dimethylformamide was added dropwise. The reaction was warmed to room temperature then 100 ml of water was added and the organic layer was separated. The aqueous layer was extracted with two 100 ml portions of ether and the combined organic extracts were dried over sodium sulfate and evaporated to give 8.5 g of 2-formylbenzaldehyde diethylacetal as an oil; ; 1H-NMR (200 MHz, CDCl3) d 5.06 (CHOEt). was added dropwise the organic layer was separated The aqueous layer was extracted with two 100 ml portions of ether the combined organic extracts were dried over sodium sulfate evaporated

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 2.5 ml of diisopropylamine in 20 ml of dry tetrahydrofuran at −78° C. was added 11 ml of a 1.6 M solution of butyllithium in hexanes. The solution was stirred for 20 min. then a solution of 1.15 g of 2-fluoropyridine in 3 ml of tetrahydrofuran was added. The solution was stirred at −78° C. for 30 min then a solution of 2-formylbenzaldehyde diethylacetal in 3 ml of tetrahydrofuran was added dropwise. This solution was stirred for 1 h then warmed to room temperature overnight. The reaction was poured into a 5% solution of sodium carbonate and extracted with two 300 ml portions of ether. The combined organic layers were washed with 300 ml of water then the same volume of brine and dried over sodium sulfate. Evaporation of the solvent afforded (2-fluoropyridin-3-yl)-2-(diethoxymethyl)-phenylmethanol as a viscous oil; 1H-NMR (200 MHz, CDCl3) d 5.60 (CHOEt). The solution was stirred at −78° C. for 30 min This solution was stirred for 1 h extracted with two 300 ml portions of ether The combined organic layers were washed with 300 ml of water the same volume of brine and dried over sodium sulfate Evaporation of the solvent

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 10.4 g of 2-bromobenzaldehyde diethyl acetal in 200 ml of dry diethyl ether at −65° C. was added 27.5 ml of a 1.6 M solution of butyllithium in hexanes. The solution was stirred at this temperature for 30 min. then slowly warmed to −40° C. when 3.4 ml of dimethylformamide was added dropwise. The reaction was warmed to room temperature then 100 ml of water was added and the organic layer was separated. The aqueous layer was extracted with two 100 ml portions of ether and the combined organic extracts were dried over sodium sulfate and evaporated to give 8.5 g of 2-formylbenzaldehyde diethylacetal as an oil; 1H-NMR (200 MHz, CDCl3) d 5.06 (CHOEt). was added dropwise the organic layer was separated The aqueous layer was extracted with two 100 ml portions of ether the combined organic extracts were dried over sodium sulfate evaporated