4-propylaniline

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: A solution of 31.4 g of p-n-propylaniline dissolved in 116 ml of acetic acid and 232 ml of water was added dropwise into 200 ml of a mixed solution comprising 130 g of sodium isocyanate and 900 ml of water, and then stirred in an ice-bath for 30 minutes. The crystals precipitated were filtered, washed with water and dried to give 38.88 g of 4-n-propylphenylurea. After the 4-n-propylphenylurea was added in portions into 107.6 ml of 20% fuming sulfuric acid, the reaction was carried out at 60° C. for 2 hours. Under cooling in an ice-bath, about 400 ml of ice was added into the reaction mixture, followed by heating under reflux for 4 hours. The crystals precipitated by cooling were filtered, washed with water and then dried to give 30.09 g of the above title product (yield: 64.1%). Melting point: 30 261.7°-262.3° C. The crystals precipitated were filtered washed with water dried

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

Procedure: To a mixture of 3-(2-amino-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl)benzoic acid (41 mg, 0.15 mmol), 4-propylaniline (0.029 mL, 0.20 mmol), and N,N-diisopropylethylamine (0.052 mL, 0.30 mmol) in 1.5 mL DMF at room temperature was added COMU (68 mg, 0.158 mmol). The reaction was briefly warmed to approx. 60° C. and then continued at room temperature for 15 hours. The reaction was added drop wise to a stirring mixture of 35 mL water containing 5 mL brine at room temperature, and the resulting precipitate filtered and rinsed with water. The filtrate was partitioned between EtOAc and aqueous Na2CO3 solution, the EtOAc layer washed with H2O, brine, dried with anhydrous Na2SO4 and rotary evaporated. The resulting solid was combined with the filtered precipitate and then chromatographed eluting with portions of CHCl3, then 1:1 CHCl3:EtOAc, and then 5% MeOH/CHCl3. The obtained solid was then triturated with an EtOAc/hexane mixture to give the title compound as a light beige solid (18 mg, 32%). 1H NMR (DMSO-d6) δ: 10.07 (s, 1H), 8.13 (s, 1H), 7.62-7.69 (m, 2H), 7.48-7.51 (m, 1H), 7.31-7.40 (m, 2H), 7.21 (dt, J=7.7, 2.0 Hz, 1H), 7.13-7.19 (m, 2H), 6.40 (s, 2H), 4.29 (s, 2H), 3.65 (t, J=6.0 Hz, 2H), 2.77 (t, J=5.9 Hz, 2H), 2.50-2.56 (m, 2H), 1.58 (sxt, J=7.4 Hz, 2H), 0.89 (t, J=7.3 Hz, 3H). The reaction was added drop the resulting precipitate filtered rinsed with water The filtrate was partitioned between EtOAc and aqueous Na2CO3 solution the EtOAc layer washed with H2O, brine dried with anhydrous Na2SO4 and rotary evaporated chromatographed eluting with portions of CHCl3 The obtained solid was then triturated with an EtOAc/hexane mixture

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

Procedure: In the manner described in example 3, 2-bromophenylacetic acid is condensed with 4-propylaniline to yield 2-[(4-propylphenyl)amino]phenylacetic acid.

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

Procedure: In the manner described in example 3, 2-bromophenylacetic acid is condensed with 4-propylaniline to yield 2-[(4-propylphenyl)amino]phenylacetic acid.

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

Procedure: To a mixture of 3-(2-amino-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl)benzoic acid (41 mg, 0.15 mmol), 4-propylaniline (0.029 mL, 0.20 mmol), and N,N-diisopropylethylamine (0.052 mL, 0.30 mmol) in 1.5 mL DMF at room temperature was added COMU (68 mg, 0.158 mmol). The reaction was briefly warmed to approx. 60° C. and then continued at room temperature for 15 hours. The reaction was added drop wise to a stirring mixture of 35 mL water containing 5 mL brine at room temperature, and the resulting precipitate filtered and rinsed with water. The filtrate was partitioned between EtOAc and aqueous Na2CO3 solution, the EtOAc layer washed with H2O, brine, dried with anhydrous Na2SO4 and rotary evaporated. The resulting solid was combined with the filtered precipitate and then chromatographed eluting with portions of CHCl3, then 1:1 CHCl3:EtOAc, and then 5% MeOH/CHCl3. The obtained solid was then triturated with an EtOAc/hexane mixture to give the title compound as a light beige solid (18 mg, 32%). 1H NMR (DMSO-d6) δ: 10.07 (s, 1H), 8.13 (s, 1H), 7.62-7.69 (m, 2H), 7.48-7.51 (m, 1H), 7.31-7.40 (m, 2H), 7.21 (dt, J=7.7, 2.0 Hz, 1H), 7.13-7.19 (m, 2H), 6.40 (s, 2H), 4.29 (s, 2H), 3.65 (t, J=6.0 Hz, 2H), 2.77 (t, J=5.9 Hz, 2H), 2.50-2.56 (m, 2H), 1.58 (sxt, J=7.4 Hz, 2H), 0.89 (t, J=7.3 Hz, 3H). The reaction was added drop the resulting precipitate filtered rinsed with water The filtrate was partitioned between EtOAc and aqueous Na2CO3 solution the EtOAc layer washed with H2O, brine dried with anhydrous Na2SO4 and rotary evaporated chromatographed eluting with portions of CHCl3 The obtained solid was then triturated with an EtOAc/hexane mixture

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

Procedure: The title compound was synthesized according to the procedure described for the preparation of Example 231 using 6 (100 mg, 0.43 mmol) and 4-propylaniline (0.10 ml; 0.65 mmol) to provide 243 (23 mg, 15% yield) as a brown solid. LC-MS (M+H (parent)=330, obsd.=330). The title compound was synthesized

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

Procedure: The title compound was synthesized according to the procedure described for the preparation of Example 231 using 6 (100 mg, 0.43 mmol) and 4-propylaniline (0.10 ml; 0.65 mmol) to provide 243 (23 mg, 15% yield) as a brown solid. LC-MS (M+H (parent)=330, obsd.=330). The title compound was synthesized

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

Procedure: A solution of 95% 4-nitrophthalic acid anhydride (4.22 g, 20.7 mmol) and 4-propylaniline (2.81 g, 20.7 mmol) in acetic acid (86 ml) was refluxed by heating for 24 hours. The reaction solution was cooled to room temperature, and then added to ice water, and the deposited crystals were collected by filtration, and washed with water. The resulting crystals were purified by recrystallization (ethanol) to obtain 5-nitro-2-(4-propyl-phenyl)-isoindole-1,3-dione as pale yellow scaly crystals (5.89 g, yield: 91.4%). by heating for 24 hours the deposited crystals were collected by filtration washed with water The resulting crystals were purified by recrystallization (ethanol)

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

Procedure: 4-n-Propylaniline (0.11 g) was added to a stirred suspension of 5-(4-cyanobenzamido)-2-methylbenzoyl chloride (0.224 g), triethylamine (0.21 ml) and methylene chloride (5 ml) and the resultant mixture was stirred at ambient temperature for 16 hours. The mixture was filtered and the filtrate was evaporated. The residue was purified by column chromatography on silica using increasingly polar mixtures of methylene chloride and methanol as eluent, There was thus obtained the title compound (0.049 g); NMR Spectrum: (DMSOd6) 0.87 (t, 3H), 1.56 (m, 2H), 2.33 (s, 3H), 2.48 (m, 2H), 7.13 (d, 2H), 7.28 (d, 1H), 7.63 (m, 2H), 7.83 (m, 3H), 8.01 (d, 1H), 8.1 (m, 2H); Mass Spectrum: M+H+ 398. The mixture was filtered the filtrate was evaporated The residue was purified by column chromatography on silica using increasingly polar mixtures of methylene chloride and methanol as eluent