7-Amino-3-methylphthalide

Base Information

• Chemical Name: 7-Amino-3-methylphthalide
• CAS No.: 148843-77-0
• Molecular Formula: C9H9NO2
• Molecular Weight: 163.176
• Mol file: 148843-77-0.mol

Synonyms:1(3H)-isobenzofuranone, 7-amino-3-methyl-;7-Amino-3-methyl-2-benzofuran-1(3H)-one

Chemical Property of 7-Amino-3-methylphthalide

Chemical Property:

• Vapor Pressure: 4.35E-05mmHg at 25°C
• Melting Point: 76-76.5 °C(Solv: ligroine (8032-32-4))
• Refractive Index: 1.61
• Boiling Point: 350.6 °C at 760 mmHg
• PKA: 2.33±0.40(Predicted)
• Flash Point: 195.7 °C
• PSA: 52.32000
• Density: 1.271 g/cm³
• LogP: 2.08140

Purity/Quality:

99% ^*data from raw suppliers

7-amino-3-methyl-1(3H)-Isobenzofuranone 97.00% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 7-Amino-3-methylphthalide

There total 9 articles about 7-Amino-3-methylphthalide which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

2-acetyl-6-nitrobenzoic acid (13619-70-0) → 7-amino-3-methyl-2-benzofuran-1(3H)-one (148843-77-0) + 6-ethyl-anthranilic acid (66232-56-2)

Guidance literature:

With hydrogen; palladium on activated charcoal; 5% Pd on active carbon; In 1,4-dioxane; at 30 - 100 ℃; for 41h; under 1500.12 Torr;

DOI:10.1002/ps.304

Reference yield:

7-amino-3-hydroxy-3-methylisobenzofuran-1(3H)-one (13619-67-5) → 7-amino-3-methyl-2-benzofuran-1(3H)-one (148843-77-0) + 6-ethyl-anthranilic acid (66232-56-2)

Guidance literature:

With hydrogen; Raney 2800 nickel; In water; at 90 ℃; for 1h; under 2925.29 Torr; pH=7; Product distribution / selectivity; Aqueous buffer;

Reference yield:

2-acetyl-6-nitrobenzoic acid (13619-70-0) → 7-amino-3-methyl-2-benzofuran-1(3H)-one (148843-77-0) + 7-amino-3-hydroxy-3-methylisobenzofuran-1(3H)-one (13619-67-5) + 6-ethyl-anthranilic acid (66232-56-2)

Guidance literature:

With hydrogen; palladium 10% on activated carbon; In water; at 80 ℃; for 1h; under 2925.29 Torr; pH=12; Product distribution / selectivity;

upstream raw materials:

2-acetyl-6-nitrobenzoic acid

7-amino-3-hydroxy-3-methylisobenzofuran-1(3H)-one

Downstream raw materials:

6-ethyl-anthranilic acid

2-amino-6-(1-hydroxy-ethyl)-benzoic acid potassium salt

pyriftalid

Refernces

• 1、 Li, Zhong,Li, Bing,Yang, An-Jiang,Zhang, Fu-Li. "Concise Synthesis of Key Intermediates of Pyriftalid and Paquinimod via Hydrogenation Method". . p. 1528 - 1532. Retrieved 2017/10/25.
• 2、 -. "METHOD FOR THE PREPARATION OF 2-AMINO-6-ETHYLBENZOIC ACID". Page/Page column 10; 11. . Retrieved 2011/06/11.