ethyl 4-(methylamino)butanoate;hydrochloride

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2.00 g (13.0 mmol) of 4-(methylamino)butanoic acid hydrochloride was dissolved in 40 mL of ethanol and 69 μL (1.30 mmol) of concentrated sulfuric acid was added thereto, followed by stirring of the mixture at 90° C. for 1 hour. The solvent was distilled off under reduced pressure, followed by azeotropy with toluene. 3.02 g of the obtained residue was used for the subsequent reaction as such. The solvent was distilled off under reduced pressure 3.02 g of the obtained residue was used for the subsequent reaction as such

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

Procedure: 858 mg of ethyl N-methyl-4-aminobutyrate hydrochloride, 238 mg of triethylamine, 4 ml of 2-propanol and 2 ml of N,N-dimethylformamide were added to 400 mg of 2-chloro-4-(3,4-methylenedioxybenzyl)amino-6-cyanoquinazoline. The obtained mixture was refluxed for 1 hour, cooled to room temperature and filtered. The filtrate was distilled under a reduced pressure to remove the solvent and the residue was recrystallized (from ethanol/water) to give 410 mg of the title compound. The obtained mixture was refluxed for 1 hour filtered The filtrate was distilled under a reduced pressure to remove the solvent the residue was recrystallized (from ethanol/water)

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

Procedure: 858 mg of ethyl N-methyl-4-aminobutyrate hydrochloride, 238 mg of triethylamine, 4 ml of 2-propanol and 2 ml of N,N-dimethylformamide were added to 400 mg of 2-chloro-4-(3,4-methylenedioxybenzyl)amino-6-cyanoquinazoline. The obtained mixture was refluxed for 1 hour, cooled to room temperature and filtered. The filtrate was distilled under a reduced pressure to remove the solvent and the residue was recrystallized (from ethanol/water) to give 410 mg of the title compound. The obtained mixture was refluxed for 1 hour filtered The filtrate was distilled under a reduced pressure to remove the solvent the residue was recrystallized (from ethanol/water)

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

Procedure: 858 mg of ethyl N-methyl-4-aminobutyrate hydrochloride, 238 mg of triethylamine, 4 ml of 2-propanol and 2 ml of N,N-dimethylformamide were added to 400 mg of 2-chloro-4-(3,4-methylenedioxybenzyl)amino-6-cyanoquinazoline. The obtained mixture was refluxed for 1 hour, cooled to room temperature and filtered. The filtrate was distilled under a reduced pressure to remove the solvent and the residue was recrystallized (from ethanol/water) to give 410 mg of the title compound. The obtained mixture was refluxed for 1 hour filtered The filtrate was distilled under a reduced pressure to remove the solvent the residue was recrystallized (from ethanol/water)

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

Procedure: 858 mg of ethyl N-methyl-4-aminobutyrate hydrochloride, 238 mg of triethylamine, 4 ml of 2-propanol and 2 ml of N,N-dimethylformamide were added to 400 mg of 2-chloro-4-(3,4-methylenedioxybenzyl)amino-6-cyanoquinazoline. The obtained mixture was refluxed for 1 hour, cooled to room temperature and filtered. The filtrate was distilled under a reduced pressure to remove the solvent and the residue was recrystallized (from ethanol/water) to give 410 mg of the title compound. The obtained mixture was refluxed for 1 hour filtered The filtrate was distilled under a reduced pressure to remove the solvent the residue was recrystallized (from ethanol/water)

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2.00 g (13.0 mmol) of 4-(methylamino)butanoic acid hydrochloride was dissolved in 40 mL of ethanol and 69 μL (1.30 mmol) of concentrated sulfuric acid was added thereto, followed by stirring of the mixture at 90° C. for 1 hour. The solvent was distilled off under reduced pressure, followed by azeotropy with toluene. 3.02 g of the obtained residue was used for the subsequent reaction as such. The solvent was distilled off under reduced pressure 3.02 g of the obtained residue was used for the subsequent reaction as such