3-氯-4-三氟甲氧基苯甲醛

反应条件: temp:0.00; pressure:0.00; stir:

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 0.60 g of 3-acetyl-4-hydroxy-2(1H)-quinolinone, 1.99 g of 3-chloro-4-(trifluoromethoxy)benzaldehyde, 10 ml of pyridine and 88 μl of piperidine was heated under refluxing overnight. After cooling to room temperature, 50 ml of water was added to the reaction mixture, and precipitated crystals were filtered, and washed with 40 ml of tetrahydrofuran, and 60 ml of hexane to obtain 0.92 g of 4-hydroxy-3-[3-[3-chloro-4-(trifluoromethoxy)phenyl]-1-oxo-2-propenyl]-2(1H)-quinolinone [Compound No. (3c-32)] as a yellow crystal. was heated under refluxing overnight precipitated crystals were filtered washed with 40 ml of tetrahydrofuran, and 60 ml of hexane

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

实验步骤: A mixture of 0.50 g of 3-acetyl-4-hydroxy-6-methyl-2(1H)-pyridinone, 0.74 g of 3-chloro-4-(trifluoromethoxy)benzaldehyde, 6 mg of pyridine and 0.1 ml of piperidine was heated under refluxing for 4 hours. After cooled to room temperature, 40 ml of water was added to the reaction mixture, precipitated crystals were filtered, and this was washed with tetrahydrofuran, then with ethyl acetate to obtain 0.41 g of 4-hydroxy-3-[3-[3-chloro-4-(trifluoromethoxy)phenyl]-1-oxo-2-propenyl]-6-methyl-2(1H)-pyridinone [Compound No. (3a-32)] as a yellow crystal. was heated under refluxing for 4 hours precipitated crystals were filtered this was washed with tetrahydrofuran

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

实验步骤: A mixture of 2.25 g of 3-acetyl-4-hydroxy-2H-1-benzopyran-2-one, 2.25 g of 3-chloro-4-(trifluoromethoxy)benzaldehyde, 20 ml of chloroform and 0.7 ml of piperidine was heated under refluxing for 2 hours and 30 minutes. After cooled to room temperature, the reaction mixture was concentrated under reduced pressure, and the residue was subjected to column chromatography. Resulting crystals were washed with 40 ml of t-butyl methyl ether to obtain 1.49 g of 4-hydroxy-3-[3-[3-chloro-4-(trifluoromethoxy)phenyl]-1-oxo-2-propenyl]-2H-1-benzopyran-2-one [Compound No. (1c-6)] was obtained as a yellow crystal. was heated under refluxing for 2 hours and 30 minutes the reaction mixture was concentrated under reduced pressure Resulting crystals were washed with 40 ml of t-butyl methyl ether

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

实验步骤: A mixture of 1.85 g of 3-acetyl-4-hydroxy-6-methyl-2H-pyran-2-one, 2.25 g of 3-chloro-4-(trifluoromethoxy)benzaldehyde, 20 ml of chloroform and 0.7 ml of piperidine was heated under refluxing for 4 hours. After cooling to room temperature, the reaction mixture was concentrated under reduced pressure, and the residue was subjected to column chromatography. Resulting crystals were washed with 40 ml of t-butyl methyl ether to obtain 0.40 g of 4-hydroxy-3-[3-[3-chloro-4-(trifluoromethoxy)phenyl]-1-oxo-2-propenyl]-6-methyl-2H-pyran-2-one [Compound No. (1a-6]) as a yellow crystal. was heated under refluxing for 4 hours the reaction mixture was concentrated under reduced pressure Resulting crystals were washed with 40 ml of t-butyl methyl ether

反应条件: temp:0.00; pressure:0.00; stir:

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 0.60 g of 3-acetyl-4-hydroxy-2(1H)-quinolinone, 1.99 g of 3-chloro-4-(trifluoromethoxy)benzaldehyde, 10 ml of pyridine and 88 μl of piperidine was heated under refluxing overnight. After cooling to room temperature, 50 ml of water was added to the reaction mixture, and precipitated crystals were filtered, and washed with 40 ml of tetrahydrofuran, and 60 ml of hexane to obtain 0.92 g of 4-hydroxy-3-[3-[3-chloro-4-(trifluoromethoxy)phenyl]-1-oxo-2-propenyl]-2(1H)-quinolinone [Compound No. (3c-32)] as a yellow crystal. was heated under refluxing overnight precipitated crystals were filtered washed with 40 ml of tetrahydrofuran, and 60 ml of hexane

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

实验步骤: A mixture of 0.50 g of 3-acetyl-4-hydroxy-6-methyl-2(1H)-pyridinone, 0.74 g of 3-chloro-4-(trifluoromethoxy)benzaldehyde, 6 mg of pyridine and 0.1 ml of piperidine was heated under refluxing for 4 hours. After cooled to room temperature, 40 ml of water was added to the reaction mixture, precipitated crystals were filtered, and this was washed with tetrahydrofuran, then with ethyl acetate to obtain 0.41 g of 4-hydroxy-3-[3-[3-chloro-4-(trifluoromethoxy)phenyl]-1-oxo-2-propenyl]-6-methyl-2(1H)-pyridinone [Compound No. (3a-32)] as a yellow crystal. was heated under refluxing for 4 hours precipitated crystals were filtered this was washed with tetrahydrofuran

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

实验步骤: A mixture of 2.25 g of 3-acetyl-4-hydroxy-2H-1-benzopyran-2-one, 2.25 g of 3-chloro-4-(trifluoromethoxy)benzaldehyde, 20 ml of chloroform and 0.7 ml of piperidine was heated under refluxing for 2 hours and 30 minutes. After cooled to room temperature, the reaction mixture was concentrated under reduced pressure, and the residue was subjected to column chromatography. Resulting crystals were washed with 40 ml of t-butyl methyl ether to obtain 1.49 g of 4-hydroxy-3-[3-[3-chloro-4-(trifluoromethoxy)phenyl]-1-oxo-2-propenyl]-2H-1-benzopyran-2-one [Compound No. (1c-6)] was obtained as a yellow crystal. was heated under refluxing for 2 hours and 30 minutes the reaction mixture was concentrated under reduced pressure Resulting crystals were washed with 40 ml of t-butyl methyl ether

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

实验步骤: A mixture of 1.85 g of 3-acetyl-4-hydroxy-6-methyl-2H-pyran-2-one, 2.25 g of 3-chloro-4-(trifluoromethoxy)benzaldehyde, 20 ml of chloroform and 0.7 ml of piperidine was heated under refluxing for 4 hours. After cooling to room temperature, the reaction mixture was concentrated under reduced pressure, and the residue was subjected to column chromatography. Resulting crystals were washed with 40 ml of t-butyl methyl ether to obtain 0.40 g of 4-hydroxy-3-[3-[3-chloro-4-(trifluoromethoxy)phenyl]-1-oxo-2-propenyl]-6-methyl-2H-pyran-2-one [Compound No. (1a-6]) as a yellow crystal. was heated under refluxing for 4 hours the reaction mixture was concentrated under reduced pressure Resulting crystals were washed with 40 ml of t-butyl methyl ether