2-amino-N-phenylbenzamide

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

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

Procedure: Using the procedure described in Example 138, N-phenyl-2-aminobenzamide (0.97 mmol) and N-(4-pyridyl)isonipecotoyl chloride (1.9 mmol), purifying with RPHPLC Method A, yielded 233 mg (55%) of the title compound. purifying with RPHPLC Method A

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

Procedure: To a stirred mixture of 1.0 g of 2-amino-N-phenylbenzamide and 500 ml of ether was added dropwise, a solution of 7.7 g of benzoyl isothiocyanate in 100 ml of ether over 20 minutes. After standing several hours, the solid was collected, giving 17.3 g of the desired product as cream- colored crystals mp 197°-200° C. (dec.). was added dropwise After standing several hours the solid was collected

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

Procedure: 9.6 g (0.4 mol) Magnesium, 0.1 g iodine and 180 ml anhydrous (sodium dried) diethyl ether were placed in a 2 liter flask equipped with magnetic stirrer, condenser, dropping funnel containing 62.4 g (0.4 mol) ethyl iodide and drying (CaCl2) tubes. The ethyl iodide was added dropwise slowly until the reaction started. The magnetic stirrer was then started and the remaining ethyl iodide added over a period of about 3/4 hr. It was not found necessary to apply external cooling. Stirring was continued for a further 1/2 hr at ambient temperature to ensure completion of reaction. To the resulting solution 18.6 g (0.2 mol) of aniline were added dropwise over a period of about 1/2 hr. and stirring was again continued at ambient temperature for a further 1/2 hr. To this mixture 15.1 g (0.1 mol) methyl 2-aminobenzoate were added dropwise over a period of about 1/2 hr. The reaction mixture became relatively viscous (a quantity e.g. 80 ml anhydrous diethyl ether can be added to this mixture and the stirring can be supplemented by manual agitation). Stirring, or manual agitation, was continued for about one hour. A saturated aqueous solution of ammonium chloride was then added to quench the reaction, about 300 to 350 ml is usually adequate. This mixture was thoroughly stirred and the aqueous and organic phases were separated. The aqueous phase was washed with fresh diethyl ether (ca 100 ml.) and the ethereal solutions were combined, washed with water and dried over anhydrous magnesium sulphate. The intermediate, 2-amino-N-phenylbenzamide was isolated by evaporating off the ether solvent. This crude 2-amino-N-phenylbenzamide (21 g; 0.1 mol; 99% theory based on methyl 2-aminobenzoate) had a melting point of 95° C. 10.6 g (0.05 mol) of the 2-amino-N-phenylbenzamide and 7.46 g (0.05 mol) of 4-dimethylaminobenzaldehyde were heated under reflux in 100 ml ethanol for 5 hrs. The reaction mixture was allowed to cool and the product slowly crystallised out. The crystals were filtered off to give 13 g (0.038 mol; 76% theory) of a pale yellow solid. The title compound, recrystyallised from methanol, had a melting point of 195° C. The IR and NMR spectra of this purified product were taken, as described above. The compound was also imaged onto CF paper to give an intense yellow-gold colour. The UV-visible reflectance spectrum of this colouration was measured. The results of spectral analysis were as follows: by evaporating off the ether solvent to cool the product slowly crystallised out The crystals were filtered off to give 13 g (0.038 mol; 76% theory) of a pale yellow solid

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

Procedure: 9.6 g (0.4 mol) Magnesium, 0.1 g iodine and 180 ml anhydrous (sodium dried) diethyl ether were placed in a 2 liter flask equipped with magnetic stirrer, condenser, dropping funnel containing 62.4 g (0.4 mol) ethyl iodide and drying (CaCl2) tubes. The ethyl iodide was added dropwise slowly until the reaction started. The magnetic stirrer was then started and the remaining ethyl iodide added over a period of about 3/4 hr. It was not found necessary to apply external cooling. Stirring was continued for a further 1/2 hr at ambient temperature to ensure completion of reaction. To the resulting solution 18.6 g (0.2 mol) of aniline were added dropwise over a period of about 1/2 hr. and stirring was again continued at ambient temperature for a further 1/2 hr. To this mixture 15.1 g (0.1 mol) methyl 2-aminobenzoate were added dropwise over a period of about 1/2 hr. The reaction mixture became relatively viscous (a quantity e.g. 80 ml anhydrous diethyl ether can be added to this mixture and the stirring can be supplemented by manual agitation). Stirring, or manual agitation, was continued for about one hour. A saturated aqueous solution of ammonium chloride was then added to quench the reaction, about 300 to 350 ml is usually adequate. This mixture was thoroughly stirred and the aqueous and organic phases were separated. The aqueous phase was washed with fresh diethyl ether (ca 100 ml.) and the ethereal solutions were combined, washed with water and dried over anhydrous magnesium sulphate. The intermediate, 2-amino-N-phenylbenzamide was isolated by evaporating off the ether solvent. This crude 2-amino-N-phenylbenzamide (21 g; 0.1 mol; 99% theory based on methyl 2-aminobenzoate) had a melting point of 95° C. 10.6 g (0.05 mol) of the 2-amino-N-phenylbenzamide and 7.46 g (0.05 mol) of 4-dimethylaminobenzaldehyde were heated under reflux in 100 ml ethanol for 5 hrs. The reaction mixture was allowed to cool and the product slowly crystallised out. The crystals were filtered off to give 13 g (0.038 mol; 76% theory) of a pale yellow solid. The title compound, recrystyallised from methanol, had a melting point of 195° C. The IR and NMR spectra of this purified product were taken, as described above. The compound was also imaged onto CF paper to give an intense yellow-gold colour. The UV-visible reflectance spectrum of this colouration was measured. The results of spectral analysis were as follows: by evaporating off the ether solvent to cool the product slowly crystallised out The crystals were filtered off to give 13 g (0.038 mol; 76% theory) of a pale yellow solid

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

Procedure: 9.6 g (0.4 mol) Magnesium, 0.1 g iodine and 180 ml anhydrous (sodium dried) diethyl ether were placed in a 2 liter flask equipped with magnetic stirrer, condenser, dropping funnel containing 62.4 g (0.4 mol) ethyl iodide and drying (CaCl2) tubes. The ethyl iodide was added dropwise slowly until the reaction started. The magnetic stirrer was then started and the remaining ethyl iodide added over a period of about 3/4 hr. It was not found necessary to apply external cooling. Stirring was continued for a further 1/2 hr at ambient temperature to ensure completion of reaction. To the resulting solution 18.6 g (0.2 mol) of aniline were added dropwise over a period of about 1/2 hr. and stirring was again continued at ambient temperature for a further 1/2 hr. To this mixture 15.1 g (0.1 mol) methyl 2-aminobenzoate were added dropwise over a period of about 1/2 hr. The reaction mixture became relatively viscous (a quantity e.g. 80 ml anhydrous diethyl ether can be added to this mixture and the stirring can be supplemented by manual agitation). Stirring, or manual agitation, was continued for about one hour. A saturated aqueous solution of ammonium chloride was then added to quench the reaction, about 300 to 350 ml is usually adequate. This mixture was thoroughly stirred and the aqueous and organic phases were separated. The aqueous phase was washed with fresh diethyl ether (ca 100 ml.) and the ethereal solutions were combined, washed with water and dried over anhydrous magnesium sulphate. The intermediate, 2-amino-N-phenylbenzamide was isolated by evaporating off the ether solvent. This crude 2-amino-N-phenylbenzamide (21 g; 0.1 mol; 99% theory based on methyl 2-aminobenzoate) had a melting point of 95° C. 10.6 g (0.05 mol) of the 2-amino-N-phenylbenzamide and 7.46 g (0.05 mol) of 4-dimethylaminobenzaldehyde were heated under reflux in 100 ml ethanol for 5 hrs. The reaction mixture was allowed to cool and the product slowly crystallised out. The crystals were filtered off to give 13 g (0.038 mol; 76% theory) of a pale yellow solid. The title compound, recrystyallised from methanol, had a melting point of 195° C. The IR and NMR spectra of this purified product were taken, as described above. The compound was also imaged onto CF paper to give an intense yellow-gold colour. The UV-visible reflectance spectrum of this colouration was measured. The results of spectral analysis were as follows: equipped with magnetic stirrer, condenser drying (CaCl2) tubes The ethyl iodide was added dropwise slowly until the reaction the remaining ethyl iodide added over a period of about 3/4 hr completion of reaction and stirring was again continued at ambient temperature for a further 1/2 hr can be added to this mixture Stirring manual agitation, was continued for about one hour to quench the reaction, about 300 to 350 ml This mixture was thoroughly stirred the aqueous and organic phases were separated The aqueous phase was washed with fresh diethyl ether (ca 100 ml.) washed with water dried over anhydrous magnesium sulphate

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

Procedure: 9.6 g (0.4 mol) Magnesium, 0.1 g iodine and 180 ml anhydrous (sodium dried) diethyl ether were placed in a 2 liter flask equipped with magnetic stirrer, condenser, dropping funnel containing 62.4 g (0.4 mol) ethyl iodide and drying (CaCl2) tubes. The ethyl iodide was added dropwise slowly until the reaction started. The magnetic stirrer was then started and the remaining ethyl iodide added over a period of about 3/4 hr. It was not found necessary to apply external cooling. Stirring was continued for a further 1/2 hr at ambient temperature to ensure completion of reaction. To the resulting solution 18.6 g (0.2 mol) of aniline were added dropwise over a period of about 1/2 hr. and stirring was again continued at ambient temperature for a further 1/2 hr. To this mixture 15.1 g (0.1 mol) methyl 2-aminobenzoate were added dropwise over a period of about 1/2 hr. The reaction mixture became relatively viscous (a quantity e.g. 80 ml anhydrous diethyl ether can be added to this mixture and the stirring can be supplemented by manual agitation). Stirring, or manual agitation, was continued for about one hour. A saturated aqueous solution of ammonium chloride was then added to quench the reaction, about 300 to 350 ml is usually adequate. This mixture was thoroughly stirred and the aqueous and organic phases were separated. The aqueous phase was washed with fresh diethyl ether (ca 100 ml.) and the ethereal solutions were combined, washed with water and dried over anhydrous magnesium sulphate. The intermediate, 2-amino-N-phenylbenzamide was isolated by evaporating off the ether solvent. This crude 2-amino-N-phenylbenzamide (21 g; 0.1 mol; 99% theory based on methyl 2-aminobenzoate) had a melting point of 95° C. 10.6 g (0.05 mol) of the 2-amino-N-phenylbenzamide and 7.46 g (0.05 mol) of 4-dimethylaminobenzaldehyde were heated under reflux in 100 ml ethanol for 5 hrs. The reaction mixture was allowed to cool and the product slowly crystallised out. The crystals were filtered off to give 13 g (0.038 mol; 76% theory) of a pale yellow solid. The title compound, recrystyallised from methanol, had a melting point of 195° C. The IR and NMR spectra of this purified product were taken, as described above. The compound was also imaged onto CF paper to give an intense yellow-gold colour. The UV-visible reflectance spectrum of this colouration was measured. The results of spectral analysis were as follows: equipped with magnetic stirrer, condenser drying (CaCl2) tubes The ethyl iodide was added dropwise slowly until the reaction the remaining ethyl iodide added over a period of about 3/4 hr completion of reaction and stirring was again continued at ambient temperature for a further 1/2 hr can be added to this mixture Stirring manual agitation, was continued for about one hour to quench the reaction, about 300 to 350 ml This mixture was thoroughly stirred the aqueous and organic phases were separated The aqueous phase was washed with fresh diethyl ether (ca 100 ml.) washed with water dried over anhydrous magnesium sulphate

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

Procedure: To a stirred mixture of 10 g of 2-amino-N-phenylbenzamide and 500 ml of ether was added dropwise, a solution of 7.7 g of benzoyl isothiocyanate in 100 ml of ether over 20 minutes. After standing several hours the solid was collected, giving 17.3 g of 2-[[(benzoylamino)thioxomethyl]amino]-N-phenylbenzamide. was added dropwise After standing several hours the solid was collected

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

Procedure: A mixture of 2-amino-N-phenyl-benzamide 26 (2 g, 0.009 mol) and 1,1,1-triethoxy-ethane (5.2 mL, 0.028 mol) were heated for 5 hours. The reaction mixture was poured into water, filtered off, washed with water yielding 2-methyl-3-phenyl-3H-quinazolin-4-one 27 (1.6 g, 82%). After recrystallization it was used in next step without further purification. were heated for 5 hours filtered off washed with water

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

Procedure: To a solution of 2-nitro-N-phenylbenzamide (5 g; 20.7 mmol; 1 equiv.) in MeOH (65 mL) was added palladium on charcoal (550 mg) and decaborane (757 mg; 6.2 mmol; 0.3 equiv.) at room temperature. The mixture was heated at 60° C. for 6 hours, filtered over celite, washed with AcOEt and evaporated to give 2-amino-N-phenylbenzamide as brown solid (4.2 g; 96%) which was used without further purification. filtered over celite washed with AcOEt evaporated

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

Procedure: Using the procedure described in Example 138, N-phenyl-2-aminobenzamide (0.97 mmol) and N-(4-pyridyl)isonipecotoyl chloride (1.9 mmol), purifying with RPHPLC Method A, yielded 233 mg (55%) of the title compound. purifying with RPHPLC Method A

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

Procedure: Using the procedure described in Example 138, N-phenyl-2-aminobenzamide (0.97 mmol) and N-(4-pyridyl)isonipecotoyl chloride (1.9 mmol), purifying with RPHPLC Method A, yielded 233 mg (55%) of the title compound. purifying with RPHPLC Method A