TETRAMETHYLTEREPHTHALIC ACID

Base Information

• Chemical Name: TETRAMETHYLTEREPHTHALIC ACID
• CAS No.: 14458-05-0
• Molecular Formula: C12H14 O4
• Molecular Weight: 222.241
• Hs Code.: 2917399090
• Mol file: 14458-05-0.mol

Synonyms:Terephthalicacid, tetramethyl- (6CI,8CI); 2,3,5,6-Tetramethyl-1,4-benzenedicarboxylic acid;2,3,5,6-Tetramethyl-4-carboxybenzoic acid; 2,3,5,6-Tetramethylterephthalicacid; NSC 93949; Tetramethylterephthalic acid

Chemical Property of TETRAMETHYLTEREPHTHALIC ACID

Chemical Property:

• Vapor Pressure: 3.33E-07mmHg at 25°C
• Boiling Point: 402.6°Cat760mmHg
• PKA: 2.89±0.38(Predicted)
• Flash Point: 211.4°C
• PSA: 74.60000
• Density: 1.237g/cm³
• LogP: 2.31660

Purity/Quality:

99% ^*data from raw suppliers

2,3,5,6-Tetramethylterephthalic acid ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of TETRAMETHYLTEREPHTHALIC ACID

There total 8 articles about TETRAMETHYLTEREPHTHALIC ACID 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: 84.0%

2,3,5,6-tetramethyl-p-xylene-α,α'-diol (7522-62-5) → 2,3,5,6-tetramethyl-1,4-benzenedicarboxylic acid (14458-05-0)

Guidance literature:

With chromium(VI) oxide; sulfuric acid; In water; acetone; at 0 - 20 ℃;

DOI:10.1039/c9ta02822f

Reference yield: 50.0%

carbon dioxide (124-38-9,18923-20-1) + Potassium benzoate (582-25-2) → terephthalic acid (100-21-0) + 2-methylterephthalic acid (5156-01-4) + 2,5-dimethylterephthalic acid (6051-66-7) + 2,3,5-trimethyl-1,4-dicarboxybenzene (18087-49-5) + 2,3,5,6-tetramethyl-1,4-benzenedicarboxylic acid (14458-05-0)

Guidance literature:

With potassium acetate; potassium phthalate; zinc(II) oxide; at 450 ℃; under 25858.1 Torr;

Reference yield:

2,2-dimethylvaleroyl chloride (15721-22-9) + 2,3,5,6-tetramethyl-p-xylene-α,α'-diol (7522-62-5) → 2,3,5,6-tetramethyl-1,4-benzenedicarboxylic acid (14458-05-0)

Guidance literature:

With sulfuric acid; In water; acetone;

upstream raw materials:

2,3,5,6-tetramethyl-1,4-benzenedicarboxaldehyde

2,3,5,6-tetramethyl-p-xylene-α,α'-diol

carbon dioxide

Potassium benzoate

Downstream raw materials:

[Mn(tetramethylterephthalic acid(-2H))(dimethylformamide)]_n

Refernces

• 1、 Xu, Yan,Vermeulen, Nicolaas A.,Liu, Yangyang,Hupp, Joseph T.,Farha, Omar K.. "SALE-Ing a MOF-Based “Ship of Theseus.” Sequential Building-Block Replacement for Complete Reformulation of a Pillared-Paddlewheel Metal-Organic Framework". . p. 4345 - 4348. Retrieved 2016.
• 2、 Taher, Deeb,Corrigan, John F.. "Aryl(trimethylsilyl)selenides as reagents for the synthesis of mono- and diselenoesters". experimental part. p. 5943 - 5952. Retrieved 2012/01/04.