2-(4-chloro-2-methylphenoxy)acetaldehyde

反応条件: temp:0.00; pressure:0.00; stir:

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

実験手順: 4.6g (0.0325 mole) of boron trifluoride etherate was added to a solution containing 4.6g (0.025 mole) of (4-chloro-2-methylphenoxy)acetaldehyde and 2.5g (0.028 mole) of N-methylglycolamide in 40 ml of tetrahydrofuran. After 24 hours at ambient temperature, the reaction mixture was concentrated under reduced pressure, extracted with ether, washed with water and dried. Purification by silica chromatography gave 0.7g of 2-(4-chloro-2-methylphenoxymethyl)-3-methyl-4-oxazolidinone as a light yellow oil. the reaction mixture was concentrated under reduced pressure extracted with ether washed with water dried Purification by silica chromatography

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

実験手順: A solution containing 4.6g (0.025 mole) of (4-chloro-2-methylphenoxy)acetaldehyde and 2.1g (0.028 mole) of glycolamide in 25 ml of tetrahydrofuran and 25 ml of ether was allowed to stand at ambient temperature for 24 hours. The resulting product was washed with 5% sodium carbonate and water, dried and purified by silica chromatography to give 1.1g of 2-(4-chloro-2-methylphenoxymethyl)-4-oxazolidinone as a white crystalline solid melting at 109°-112°. The resulting product was washed with 5% sodium carbonate and water dried purified by silica chromatography

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

実験手順: A solution containing 2.5g (0.033 mole) of glycolic acid, 4.2g (0.025 mole) of 4-chloro-2-methylphenoxyacetaldehyde and 10g (0.07 mole) of boron trifluoride etherate in 50 ml of ether and 30 ml of tetrahydrofuran was allowed to stand at room temperature for 24 hours. The dark solution was washed with aqueous sodium bicarbonate, dried and concentrated to dryness. Recrystallization from ether-hexane gave 3.8g of 2-(4-chloro-2-methylphenoxymethyl)-1,3-dioxolan-4-one having a melting point of 42°-44°. The dark solution was washed with aqueous sodium bicarbonate dried concentrated to dryness Recrystallization from ether-hexane

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

実験手順: 4.6 g (0.0325 mole) of boron trifluoride etherate was added to a solution containing 4.6 g (0.025 mole) of (4-chloro-2-methylphenoxy)acetaldehyde and 2.5 g (0.028 mole) of N-methylglycolamide in 40 ml of tetrahydrofuran. After 24 hours at ambient temperature, the reaction mixture was concentrated under reduced pressure, extracted with ether, washed with water and dried. Purification by silica chromatography gave 0.7 g of 2-(4-chloro-2-methylphenoxymethyl)-3-methyl-4-oxazolidinone as a light yellow oil. the reaction mixture was concentrated under reduced pressure extracted with ether washed with water dried Purification by silica chromatography

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

実験手順: A solution containing 4.6 g (0.025 mole) of (4-chloro-2-methylphenoxy)acetaldehyde and 2.1 g (0.028 mole) of glycolamide in 25 ml of tetrahydrofuran and 25 ml of ether was allowed to stand at ambient temperature for 24 hours. The resulting product was washed with 5% sodium carbonate and water, dried and purified by silica chromatography to give 1.1 g of 2-(4-chloro-2-methylphenoxymethyl)-4-oxazolidinone as a white crystalline solid melting at 109°-112°. The resulting product was washed with 5% sodium carbonate and water dried purified by silica chromatography

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

実験手順: A solution containing 4.6 g (0.025 mole) of (4-chloro-2-methylphenoxy)acetaldehyde and 2.1 g (0.028 mole) of glycolamide in 25 ml of tetrahydrofuran and 25 ml of ether was allowed to stand at ambient temperature for 24 hours. The resulting product was washed with 5% sodium carbonate and water, dried and purified by silica chromatography to give 1.1 g of 2-(4-chloro-2-methylphenoxymethyl)-4-oxazolidinone as a white crystalline solid melting at 109°-112°. The resulting product was washed with 5% sodium carbonate and water dried purified by silica chromatography

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

実験手順: 4.6 g (0.0325 mole) of boron trifluoride etherate was added to a solution containing 4.6 g (0.025 mole) of (4-chloro-2-methylphenoxy)acetaldehyde and 2.5 g (0.028 mole) of N-methylglycolamide in 40 ml of tetrahydrofuran. After 24 hours at ambient temperature, the reaction mixture was concentrated under reduced pressure, extracted with ether, washed with water and dried. Purification by silica chromatography gave 0.7 g of 2-(4-chloro-2-methylphenoxymethyl)-3-methyl-4-oxazolidinone as a light yellow oil. the reaction mixture was concentrated under reduced pressure extracted with ether washed with water dried Purification by silica chromatography

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

実験手順: A solution containing 2.5 g (0.033 mole) of glycolic acid, 4.1 g (0.025 mole) of 4-chloro-2-methylphenoxyacetaldehyde and 10 g (0.07 mole) or boron trifluoride etherate in 50 ml of ether and 30 ml of tetrahydrofuran was allowed to stand at room temperature for 24 hours. The dark solution was washed with aqueous sodium bicarbonate, dried and concentrated to dryness. Recrystallization from ether - hexane gave 3.8 g of 2-(4-chloro-2-methylphenoxymethyl)-1,3-dioxolan-4-one having a melting point of 42°-44°. The dark solution was washed with aqueous sodium bicarbonate dried concentrated to dryness Recrystallization from ether - hexane

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

実験手順: A solution containing 4.6g (0.025 mole) of (4-chloro-2-methylphenoxy)acetaldehyde and 2.1g (0.028 mole) of glycolamide in 25 ml of tetrahydrofuran and 25 ml of ether was allowed to stand at ambient temperature for 24 hours. The resulting product was washed with 5% sodium carbonate and water, dried and purified by silica chromatography to give 1.1g of 2-(4-chloro-2-methylphenoxymethyl)-4-oxazolidinone as a white crystalline solid melting at 109°-112°. The resulting product was washed with 5% sodium carbonate and water dried purified by silica chromatography

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

実験手順: 4.6g (0.0325 mole) of boron trifluoride etherate was added to a solution containing 4.6g (0.025 mole) of (4-chloro-2-methylphenoxy)acetaldehyde and 2.5g (0.028 mole) of N-methylglycolamide in 40 ml of tetrahydrofuran. After 24 hours at ambient temperature, the reaction mixture was concentrated under reduced pressure, extracted with ether, washed with water and dried. Purification by silica chromatography gave 0.7g of 2-(4-chloro-2-methylphenoxymethyl)-3-methyl-4-oxazolidinone as a light yellow oil. the reaction mixture was concentrated under reduced pressure extracted with ether washed with water dried Purification by silica chromatography

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

実験手順: A solution containing 2.5g (0.033 mole) of glycolic acid, 4.2g (0.025 mole) of 4-chloro-2-methylphenoxyacetaldehyde and 10g (0.07 mole) of boron trifluoride etherate in 50 ml of ether and 30 ml of tetrahydrofuran was allowed to stand at room temperature for 24 hours. The dark solution was washed with aqueous sodium bicarbonate, dried and concentrated to dryness. Recrystallization from ether-hexane gave 3.8g of 2-(4-chloro-2-methylphenoxymethyl)-1,3-dioxolan-4-one having a melting point of 42°-44°. The dark solution was washed with aqueous sodium bicarbonate dried concentrated to dryness Recrystallization from ether-hexane