2-Amino-4,5-dimethoxybenzoic acid Chemical Properties

Melting point:

169-173 °C (dec.) (lit.)

Boiling point:

334.28°C (rough estimate)

Density 

1.3075 (rough estimate)

refractive index 

1.5270 (estimate)

storage temp. 

Keep in dark place,Sealed in dry,Room Temperature

solubility 

Acetontrile (Slightly), DMSO (Slightly), Methanol (Slightly)

form 

Crystalline Powder

pka

2.35±0.10(Predicted)

color 

White, beige, or gray to brown

Water Solubility 

Soluble in Methanol and Water

BRN 

782814

Stability:

May be Sensitive To Air Oxidation, Light Sensitive

InChI

InChI=1S/C9H11NO4/c1-13-7-3-5(9(11)12)6(10)4-8(7)14-2/h3-4H,10H2,1-2H3,(H,11,12)

InChIKey

HJVAVGOPTDJYOJ-UHFFFAOYSA-N

SMILES

C(O)(=O)C1=CC(OC)=C(OC)C=C1N

CAS DataBase Reference

5653-40-7(CAS DataBase Reference)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

37/39-26-36

WGK Germany 

3

HS Code 

29225090

MSDS

• Language:English Provider:4,5-Dimethoxyanthranilic acid
• Language:English Provider:ACROS
• Language:English Provider:ALFA

2-Amino-4,5-dimethoxybenzoic acid Usage And Synthesis

Chemical Properties

Brown Solid

Uses

2-Amino-4,5-dimethoxybenzoic acid is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.

reaction suitability

reaction type: solution phase peptide synthesis

Synthesis

General procedure for the synthesis of 2-amino-4,5-dimethoxybenzoic acid from 6-nitroveratric acid: first, 48.13 g (0.729 mol) of KOH pellets (85% purity) were dissolved in 250 ml of ice water. Subsequently, 50 g (0.207 mol) of methyl-4,5-dimethoxy-2-nitrobenzoate (1) was added to this clarified solution, and the resulting green suspension was heated to 70 °C. During heating, the color of the solution shifted to dark red. The progress of the reaction was monitored by HPLC and upon completion of the reaction, the solution was cooled to room temperature and the pH was adjusted to 6.6 with 34.6 g (0.570 mol) of glacial acetic acid.The obtained red suspension was hydrogenated at 50 °C and 3.5 bar pressure using 1 g of 10% Pd/C catalyst until the reaction was terminated. Upon completion of hydrogenation, the solution was filtered and the pH was adjusted to 5.1 with 31.82 g (0.525 mol) of glacial acetic acid under the protection of an inert gas.The light green suspension formed was stirred at room temperature for 30 min, followed by cooling to 5 °C and continued stirring for 30 min. The product (2) was obtained by filtration, washed in two batches with a total of 250 ml of ice water and finally dried in a vacuum oven at 55°C for 12 hrs. This process yielded 35.18 g (0.173 mol, 83% yield) of light gray crystalline product.

References

[1] Organic and Biomolecular Chemistry, 2018, vol. 16, # 28, p. 5119 - 5135
[2] Chemistry - An Asian Journal, 2017, vol. 12, # 7, p. 785 - 791
[3] Patent: US2008/319194, 2008, A1. Location in patent: Page/Page column 4
[4] Molecules, 2018, vol. 23, # 1,
[5] RSC Advances, 2016, vol. 6, # 81, p. 77717 - 77734

2-Amino-4,5-dimethoxybenzoic acid(5653-40-7)Related Product Information

• Glycine
• 4-Aminobenzoic acid
• 2,3-Dimethoxybenzoic acid
• 4-Dimethylaminobenzoic acid
• 3,5-Dimethoxybenzoic acid
• 2,6-Dimethoxybenzoic acid
• 3,4-Dimethoxybenzoic acid
• 2-Amino-4-methylbenzoic acid
• 6-Aminocaproic acid
• Anthranilic acid
• Methyl 2-nitro-3,4,5-trimethoxybenzoate
• 2-AMINO-4,5-DIMETHOXYBENZOIC ACID METHYL ESTER,6-AMINO-3,4-DIMETHOXYBENZOIC ACID METHYL ESTER
• 2-Amino-4,5-dimethoxybenzoic acid ethyl ester,6-AMINO-3,4-DIMETHOXYBENZOIC ACID ETHYL ESTER
• 2-AMINO-3,4,5-TRIMETHOXYBENZOIC ACID
• Methyl 2-amino-3,4,5-trimethoxybenzoate
• ETHYL 4,5-DIMETHOXY-2-NITROBENZOATE
• Methyl 4,5-dimethoxy-2-nitrobenzoate
• 3,4,5-TRIMETHOXY-2-NITROBENZOIC ACID