2-Amino-4-methylbenzamide

Concentrated sulfuric acid (3 mL) was carefully added to a suspension of 2- amino-4-methylbenzonitrile (800 mg, 6.1 mmol) in H2-amino-4-methylbenzonitrile (10 g, 75.7 mmol) was dissolved in ethanol, added with potassium hydroxide (21.2 g, 378 mmol), followed by refluxing for 8 hours. The reaction mixture was cooled to room temperature, concentrated under reduced pressure, and dissolved in ethyl acetate. The organic layer formed was washed with a saturated aqueous solution of sodium bicarbonate and brine. The obtained organic layer is dried over anhydrous sodium sulfate, concentrated under reduced pressure, and recrystallized from ethanol to obtain the title compound (4.9 g, 43percent). 1H-NMR Spectrum (300 MHz, DMSO- 2-amino-4-methylbenzonitrile (10 g, 75.7 mmol) was dissolved in ethanol, added with potassium hydroxide (21.2 g, 378 mmol), followed by refluxing for 8 hours. The reaction mixture was cooled to room temperature, concentrated under reduced pressure, and dissolved in ethyl acetate. The organic layer formed was washed with a saturated aqueous solution of sodium bicarbonate and brine. The obtained organic layer is dried over anhydrous sodium sulfate, concentrated under reduced pressure, and recrystallized from ethanol to obtain the title compound (4.9 g, 43percent). Compound 22 (3.00 g, 19.8 mmol) in dry DMF (100 mL) under Ar was treated with EDC.HCl (4.17 g, 21.8 mmol) and HOBt (3.33 g, 21.8 mmol) for 3 h, after which aq. NHTo a stirred solution of 2-amino-4-methyl-benzoic acid (300 mg, 1.99 mmol) in THF (6 mL), EDC.HCl (569 mg, 2.98 mmol), HOBt·NH3 (447 mg, 2.98 mmol) and DIPEA (1.06 mL, 5.96mmol) were added at RT and stirred for 1 h (TLC indicated complete consumption of startingmaterial). The reaction mixture was diluted with water (30 mL), extracted with EtOAc (3 x25 mL). The combined organic extracts were dried over Na2S04, concentrated under reducedpressure to give the crude compound which was purified by flash column chromatography(100-200 silica gel, 5 g, 50percent EtOAc-Hexane) to afford 2-amino-4-methyl-benzamide (190mg, 64percent) as a white solid 1H NMR [300 MHz, DMSO-d6]: J 7.62 (brs, 1H), 7.42 (d, J = 8.1 Hz, 1H), 6.93 (brs, 1H), 6.54-6.46 (m, 3H), 6.30- 6.27 (m, 1H), 2.15 (s, 3H).Accordingtoaliteratureprocedure, 3toasolutionof2-amino-3-methylbenzoicacid(151mg, 1.00mmol, 1.0eq)indegassedDMF(2.00mL)wereaddedHOBt(162mg, 1.20mmol, 1.2eq.), EDCI.HCl(230mg, 1.20mmol, 1.2eq.), N, N-diisopropylethylamine(350μL, 2.00mmol, 2.0eq), and7MNH3/MeOH(429μL, 1.50mmol, 1.5eq.).Thesolutionwasstirredatroomtemperaturefor24hoursthenpouredoverwaterandtheaqueouslayerextractedwithEtOAc(320mL), thecombinedorganiclayerswashedwithbrine(25mL), driedwithNa2SO4andconcentratedinvacuo.TheresiduewaspurifiedbyFCC(gradient50percentEtOAc/hexanes to 80percent EtOAc/hexanes) to give 2-amino-3-methylbenzamide (90.0 mg, 0.599mmol, 60percent)asawhiteamorphoussolid;mp:144–146°C, lit.144–145°C.General procedure: To a solution of 5-nitro-N-(3-(trifluoromethyl)phenyl)isoquinolin-1-amine (1.0 g, 3.0 mmol) in a mixture of EtOH:HGeneral procedure: To a solution of 5-nitro-N-(3-(trifluoromethyl)phenyl)isoquinolin-1-amine (1.0 g, 3.0 mmol) in a mixture of EtOH:H2O (8:2, 10 mL) were added iron powder (1.26 g, 4.8 mmol), and NH4Cl (1.6 g, 30.0 mmol). The reaction mass was heated at reflux for 2 h and filtered. The filtrate was concentrated and the residue was purified by column chromatography to afford 0.800 g of the title product. 1H NMR (300 MHz, DMSO-d6): delta 9.18 (s, 1H), 8.35 (s, 1H), 8.20 (d, J=7.8 Hz, 1H), 7.93 (d, J=8.7 Hz, 1H), 7.65 (d, J=8.4 Hz, 1H), 7.52 (t, J=7.8 Hz, 1H), 7.42-7.24 (m, 3H), 6.86 (d, J=7.5 Hz, 1H), 5.84 (s, 2H). The title compound was prepared following the procedure described in Step 3 of Intermediate-i using 4-methyl- 2-nitrobenzamide (1.60 g, 8.88 mmol), iron powder (2.97 g, 53.33 mmol), and NH4C1 (2.85 g, 53.33 mmol) in EtOH (8 mE) and water (2 mE) to afford 1.2 g of the title product. 1HNMR (300 MHz, DMSO-d5): oe 7.62 (br s, 1H), 7.42 (d, J=7.8 Hz, 1H), 6.93 (br s, 1H), 6.53 (s, 2H), 6.46 (s, 1H), 6.29 (d, J=7.8 Hz, 1H), 2.15 (s, 3H).Concentrated sulfuric acid (3 mL) was carefully added to a suspension of 2- amino-4-methylbenzonitrile (800 mg, 6.1 mmol) in H2O (1 mL). The solution was then placed into an oil bath, pre-heated to 120 0C, the reaction stirred for 20 min and then immediately cooled in an ice bath. The solution was made basic via the addition of 5 percent NaOH and the resulting solid collected via vacuum filtration. 484.4 mg (53 percent) of the title compound as a light brown solid were obtained. 1H NMR (DMSO-dbeta) delta 7.63 (br s, 1 H), 7.42 (d, 1 H), 6.95 (br s, 1 H), 6.55 (br s, 2 H), 6.45 - 6.48 (m, 1 H), 6.29 (ddd, 1 H), 2.16 (s, 3 H). MS (ES) 134 (M - 16).2-amino-4-methylbenzonitrile (10 g, 75.7 mmol) was dissolved in ethanol, added with potassium hydroxide (21.2 g, 378 mmol), followed by refluxing for 8 hours. The reaction mixture was cooled to room temperature, concentrated under reduced pressure, and dissolved in ethyl acetate. The organic layer formed was washed with a saturated aqueous solution of sodium bicarbonate and brine. The obtained organic layer is dried over anhydrous sodium sulfate, concentrated under reduced pressure, and recrystallized from ethanol to obtain the title compound (4.9 g, 43percent). 1H-NMR Spectrum (300 MHz, DMSO- 6): delta 7.40 (d, 1H), 6.52 (s, 2H), 6.45 (s, 1H), 6.28 (d, lH), 2.14 (s, 3H)2-amino-4-methylbenzonitrile (10 g, 75.7 mmol) was dissolved in ethanol, added with potassium hydroxide (21.2 g, 378 mmol), followed by refluxing for 8 hours. The reaction mixture was cooled to room temperature, concentrated under reduced pressure, and dissolved in ethyl acetate. The organic layer formed was washed with a saturated aqueous solution of sodium bicarbonate and brine. The obtained organic layer is dried over anhydrous sodium sulfate, concentrated under reduced pressure, and recrystallized from ethanol to obtain the title compound (4.9 g, 43percent). 1H-NMR Spectrum (300 MHz, DMSO-d6): delta 7.40 (d, 1H), 6.52 (s, 2H), 6.45 (s, 1H), 6.28 (d, 1H), 2.14 (s, 3H)

Molecular Weight:150.18
XLogP3:0.7
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:2
Rotatable Bond Count:1
Exact Mass:150.079312947
Monoisotopic Mass:150.079312947
Topological Polar Surface Area:69.1
Heavy Atom Count:11
Complexity:158
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes