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2-Amino-3-methylbenzamide

2-Amino-3-methylbenzamide structure

2-Amino-3-methylbenzamide 

structure
  • CAS No:

    1885-32-1

  • Formula:

    C8H10N2O

  • Chemical Name:

    2-Amino-3-methylbenzamide

  • Synonyms:

    Benzamide,2-amino-3-methyl-;m-Toluamide,2-amino-;2-Amino-3-methylbenzamide

2-Amino-3-methylbenzamide Basic Attributes

150.1778

150.18

DTXSID10557575

2924299090

Characteristics

69.1

1

149 °C

Safety Information

|Warning|H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]|P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, and P501|The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory.

2-Amino-3-methylbenzamide Use and Manufacturing

2-Amino-3-methylbenzoic acid (2.93 g, 19.8 mmol) in dry DMF (78 mL) was treated with 1, 1-carbonyl-diimidazole (3.14 g, 19.4 mmol) at 70°C under Ar for lh, after which aq. NHStep A: To 2-amino-3-methylbenzoic acid (1.5 g, 10 mmol) in DMF (5 mL) at rt were added hydroxybenzatriazole (2.0 g, 13 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (2.3 g, 12 mmol), ammonium chloride (2.3 g, 42 mmol), and diisopropylethylamine (7.5 ml, 42 mmol). The mixture was purged with N1161) A 500 mL round bottom flask was charged with 2-amino-3-methylbenzoic acid (Combi-Blocks, 4.0 g, 26.5 mmol, 1 eq), NH00373] Step A: To solution of 2-amino-3-methylbenzoic acid (4.0 g, 26.5 mmol) in degassed DMF (40 mL) were added HOBt (4.28 g, 31.7 mmol), DIEA (5.52 mL, 31.7 mmol), and 2N NHAccordingtoaliteratureprocedure, 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.To a stirred solution of 2-amino-3-methyl-benzoic acid (0.5 g, 3.31 mmol) in THF (15 mL), EDC.HCl (0.948 g, 4.97 mmol), HOBt·NH3 (0.745 g, 4.97 mmol) and DIPEA (1.76 mL, 9.93mmol) were added at RT and stirred for 6 h (TLC indicates complete conversion of startingmaterial). The reaction mixture was diluted with water (30 mL) and extracted with EtOAc (3x 100 mL). The combined organic extracts were washed with water (2 x 50 mL), brine (40mL), dried over Na2S04 and concentrated under reduced pressure to give the crude residue The crude material was purified by column chromatography (100-200 silica gel, 20 g, 50percentEtOAc-Hexane) to afford 2-amino-3-methyl-benzamide (0.3 g, 60percent) as a white solid.LCMS: m/z: 151.09 [M+H] +.Step A:

Computed Properties

Molecular Weight:150.18
XLogP3:1
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

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