N-(morpholin-2-ylmethyl)acetamide

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

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

Procedure: A mixture of 1 g of 5-amino-1-cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 1.15 g of 2-acetylaminomethylmorpholine, 1 g of triethylamine and10 ml of pyridine was heated under reflux for 16 hours. The reaction mixture was concentrated to dryness under reduced pressure, and ethyl acetate was added to the residue. The resulting crystals were collected byfiltration, and suspended in 20 ml of water. The suspension was extracted with chloroform, and the extract was dried and concentrated. Recrystallization of the residue from ethanol gave 720 mg of 5-amino-7-(2-acetylaminomethylmorpholino)-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid. m.p. 228°-229° C. was heated under reflux for 16 hours The reaction mixture was concentrated to dryness under reduced pressure, and ethyl acetate was added to the residue The resulting crystals were collected byfiltration The suspension was extracted with chloroform the extract was dried concentrated Recrystallization of the residue from ethanol

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

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

Procedure: A mixture of 2-acetylaminomethylmorpholine (7.0 g), 4-fluorobenzyl chloride (12 g), potassium carbonate (56 g), potassium iodide (1 g), and methyl ethyl ketone (100 ml) is refluxed with stirring for 17 hours. The reaction mixture is filtered and the filtrate is concentrated under reduced pressure. The residue is diluted with water and extracted with chloroform. The organic layer is separated, washed successively with water and saturated aqueous sodium chloride solution, and dried over magnesium sulfate. The solvent is distilled off under reduced pressure, and the residue is recrystallized from toluene to give the title compound (9.3 g), mp 120°-122° C. is refluxed The reaction mixture is filtered the filtrate is concentrated under reduced pressure The residue is diluted with water extracted with chloroform The organic layer is separated washed successively with water and saturated aqueous sodium chloride solution dried over magnesium sulfate The solvent is distilled off under reduced pressure the residue is recrystallized from toluene

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

Procedure: 2-Acetylaminomethyl-4-benzylmorpholine (120 g) is dissolved in a mixture of ethanol (1000 ml) and acetic acid (30 ml) and hydrogenated over 10% palladium on carbon (5 g) at about 60° C. After the calculated amount of the hydrogen is absorbed, the catalyst is filtered off. The filtrate is evaporated under reduced pressure to give the title compound as an oil. After the calculated amount of the hydrogen is absorbed the catalyst is filtered off The filtrate is evaporated under reduced pressure

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In a solution of 2-(N-acetylaminomethyl)-4-benzylmorpholine (20 g, 80.7 mmol) in ethanol-acetic acid (20/1, 210 ml) was suspended 2.0 g of 10% palladium-carbon and the mixture was stirred at 60° C. under hydrogen stream for 22 hours. The reaction mixture was filtered with Celite, the solvent was distilled off from the filtrate under reduced pressure to give crude 2-(N-acetylaminomethyl)morpholine (15.62 g). Yield=100%. This compound was used for the subsequent reaction without purification. The reaction mixture was filtered with Celite the solvent was distilled off from the filtrate under reduced pressure

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

Procedure: A mixture of 1 g of 5-amino-1-cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 1.15 g of 2-acetylaminomethylmorpholine, 1 g of triethylamine and10 ml of pyridine was heated under reflux for 16 hours. The reaction mixture was concentrated to dryness under reduced pressure, and ethyl acetate was added to the residue. The resulting crystals were collected byfiltration, and suspended in 20 ml of water. The suspension was extracted with chloroform, and the extract was dried and concentrated. Recrystallization of the residue from ethanol gave 720 mg of 5-amino-7-(2-acetylaminomethylmorpholino)-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid. m.p. 228°-229° C. was heated under reflux for 16 hours The reaction mixture was concentrated to dryness under reduced pressure, and ethyl acetate was added to the residue The resulting crystals were collected byfiltration The suspension was extracted with chloroform the extract was dried concentrated Recrystallization of the residue from ethanol