N-(4-aminophenyl)propanamide

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

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

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

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

Procedure: 14.4 g (0.05 mol) of dibenzimidazo(1,2a,1',2'-d)tetrahydropyrazine-6,13-dione and 30 g (0.18 mol) of 4-propionylaminoaniline are heated under reflux in 70 ml of dry dimethylformamide for 3 hours. After cooling down, about 700 ml of methanol are added. The precipitated solid is filtered off with suction and washed with methanol and dried to leave 20.7 g of the benzimidazole-2-carboxanilide of the formula ##STR93## Melting point 289°-291° C. After cooling down The precipitated solid is filtered off with suction washed with methanol dried

Conditions: temp:150.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 265 mg (1 mmol) of 3-(1-ethoxy-1-phenyl-methylidene)-2-indolinone are dissolved in 5 ml of DMF and after the addition of 300 mg (1.8 mmol) of 4-propionylamino-aniline stirred for 8 hours at 150° C. After cooling, it is diluted with water, the crystalline product is suction filtered, washed and dried. After cooling filtered washed dried

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

Procedure: 250 mg (2 mmol) of N-propionyl-4-nitroaniline are dissolved in 200 ml of methanol and combined with 0.6 g of 10% palladium/charcoal. The product is hydrogenated in a hydrogen atmosphere at 2 bar for 30 minutes. Then the catalyst is filtered off and the solvent is eliminated in vacuo. Then the catalyst is filtered off

Conditions: temp:150.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 265 mg (1 mmol) of 3-(1-ethoxy-1-phenyl-methylidene)-2-indolinone are dissolved in 5 ml of DMF and after the addition of 300 mg (1.8 mmol) of 4-propionylamino-aniline stirred for 8 hours at 150° C. After cooling, it is diluted with water, the crystalline product is suction filtered, washed and dried. After cooling filtered washed dried

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

Procedure: 250 mg (2 mmol) of N-propionyl-4-nitroaniline are dissolved in 200 ml of methanol and combined with 0.6 g of 10% palladium/charcoal. The product is hydrogenated in a hydrogen atmosphere at 2 bar for 30 minutes. Then the catalyst is filtered off and the solvent is eliminated in vacuo. Then the catalyst is filtered off

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

Procedure: To a solution of N-(4-aminophenyl)propanamide (2.00 g, 10.3 mmol) and pyridine (2.50 ml, 30.9 mmol) in N,N-dimethylacetamide (40 ml) was added 2,2,2-trichloroethyl chloroformate (2.13 ml, 15.5 mmol) under ice-cooling, and the mixture was stirred under ice-cooling for 2 hours. The reaction mixture was poured into ice-water, and 3.41 g (97.4%) of the desired product was collected by filtration as a solid. cooling cooling for 2 hours

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

Procedure: A mixture of N-(4-nitrophenyl)propanamide (10 g, 51.5 mmol), 10% palladium on carbon (1 g), methanol (500 ml) and tetrahydrofuran (100 ml) was stirred under hydrogen atmosphere for 12 hours, insoluble substances were removed by filtration, and the filtrate was concentrated to give 8.00 g (94.8%) of the desired product as an oil. insoluble substances were removed by filtration the filtrate was concentrated

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

Procedure: A mixture of N-(4-nitrophenyl)propanamide (10 g, 51.5 mmol), 10% palladium on carbon (1 g), methanol (500 ml) and tetrahydrofuran (100 ml) was stirred under hydrogen atmosphere for 12 hours, insoluble substances were removed by filtration, and the filtrate was concentrated to give 8.00 g (94.8%) of the desired product as an oil. insoluble substances were removed by filtration the filtrate was concentrated

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

Procedure: A mixture of N-(4-nitrophenyl)propanamide (10 g, 51.5 mmol), 10% palladium on carbon (1 g), methanol (500 ml) and tetrahydrofuran (100 ml) was stirred under hydrogen atmosphere for 12 hours, insoluble substances were removed by filtration, and the filtrate was concentrated to give 8.00 g (94.8%) of the desired product as an oil. insoluble substances were removed by filtration the filtrate was concentrated