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| CAS No.: | 14458-05-0 |
|---|---|
| Name: | TETRAMETHYLTEREPHTHALIC ACID |
| Molecular Structure: | |
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| Formula: | C12H14 O4 |
| Molecular Weight: | 222.241 |
| 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 |
| Density: | 1.237g/cm3 |
| Boiling Point: | 402.6°Cat760mmHg |
| Flash Point: | 211.4°C |
| PSA: | 74.60000 |
| LogP: | 2.31660 |
- 144851-82-1METHYL2-AMINO-3-FLUOROBENZOATE
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- 50288-62-5threo-Phenyl-2-piperidyl acetamide
- 82993-81-5D-threo-Ritalinic acid hydrochloride
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- 73441-42-6METHYL-5-CHLORO-2,2-DIMETHYLVALERATE
- 7522-62-5
2,3,5,6-tetramethyl-p-xylene-α,α'-diol
- 14458-05-0
2,3,5,6-tetramethyl-1,4-benzenedicarboxylic acid
| Conditions | Yield |
|---|---|
| With chromium(VI) oxide; sulfuric acid In water; acetone at 0 - 20℃; | 84% |
| With chromium(VI) oxide; sulfuric acid In water; acetone at 0 - 20℃; | 16% |
| With chromium(VI) oxide; sulfuric acid | |
| With chromium(VI) oxide; hydrogenchloride; sulfuric acid In water |
- 124-38-9
carbon dioxide
- 582-25-2
Potassium benzoate
A
- 100-21-0
terephthalic acid
B
- 5156-01-4
2-methylterephthalic acid
C
- 6051-66-7
2,5-dimethylterephthalic acid
D
- 18087-49-5
2,3,5-trimethyl-1,4-dicarboxybenzene
E
- 14458-05-0
2,3,5,6-tetramethyl-1,4-benzenedicarboxylic acid
| Conditions | Yield |
|---|---|
| With potassium acetate; potassium phthalate; zinc(II) oxide at 450℃; under 25858.1 Torr; Henkel Reaction; | A 50% B n/a C n/a D n/a E n/a |
- 7072-01-7
2,3,5,6-tetramethyl-1,4-benzenedicarboxaldehyde
- 14458-05-0
2,3,5,6-tetramethyl-1,4-benzenedicarboxylic acid
| Conditions | Yield |
|---|---|
| With potassium permanganate |
- 15721-22-9
2,2-dimethylvaleroyl chloride
- 7522-62-5
2,3,5,6-tetramethyl-p-xylene-α,α'-diol
- 14458-05-0
2,3,5,6-tetramethyl-1,4-benzenedicarboxylic acid
| Conditions | Yield |
|---|---|
| With sulfuric acid In water; acetone |
- 124-38-9
carbon dioxide
- 1646-54-4
1,4-dibromodurene
- 14458-05-0
2,3,5,6-tetramethyl-1,4-benzenedicarboxylic acid
| Conditions | Yield |
|---|---|
| Stage #1: 1,4-dibromodurene With tert.-butyl lithium In diethyl ether at -78 - 20℃; Inert atmosphere; Stage #2: carbon dioxide In diethyl ether at -78℃; for 0.5h; Stage #3: With hydrogenchloride In diethyl ether; water |
- 95-93-2
1,2,4,5-tetramethylbenzene
- 14458-05-0
2,3,5,6-tetramethyl-1,4-benzenedicarboxylic acid
| Conditions | Yield |
|---|---|
| Multi-step reaction with 4 steps 1.1: sodium chloride; hydrogenchloride / water / 5 h / 120 °C 1.2: 24 h / Reflux 2.1: acetic acid; potassium acetate / 24 h / 120 °C 3.1: potassium hydroxide / ethanol / 24 h / 90 °C 4.1: chromium(VI) oxide; sulfuric acid / water; acetone / 0 - 20 °C View Scheme | |
| Multi-step reaction with 4 steps 1: sodium chloride; zinc(II) chloride; hydrogenchloride / water / 120 °C 2: potassium acetate / 120 °C 3: ethanol; potassium hydroxide / 90 °C 4: chromium(VI) oxide; sulfuric acid; hydrogenchloride / water View Scheme | |
| Multi-step reaction with 4 steps 1: sodium chloride; hydrogenchloride / water / 31 h / 120 °C 2: acetic acid / 24 h / 120 °C 3: potassium hydroxide; water / tetrahydrofuran; ethanol / 24 h / 90 °C 4: chromium(VI) oxide; sulfuric acid / water; acetone / 0 - 20 °C View Scheme |
- 3022-16-0
1,4-bis(chloromethyl)-2,3,5,6-tetramethylbenzene
- 14458-05-0
2,3,5,6-tetramethyl-1,4-benzenedicarboxylic acid
| Conditions | Yield |
|---|---|
| Multi-step reaction with 3 steps 1: acetic acid; potassium acetate / 24 h / 120 °C 2: potassium hydroxide / ethanol / 24 h / 90 °C 3: chromium(VI) oxide; sulfuric acid / water; acetone / 0 - 20 °C View Scheme | |
| Multi-step reaction with 3 steps 1: potassium acetate / 120 °C 2: ethanol; potassium hydroxide / 90 °C 3: chromium(VI) oxide; sulfuric acid; hydrogenchloride / water View Scheme | |
| Multi-step reaction with 3 steps 1: acetic acid / 24 h / 120 °C 2: potassium hydroxide; water / tetrahydrofuran; ethanol / 24 h / 90 °C 3: chromium(VI) oxide; sulfuric acid / water; acetone / 0 - 20 °C View Scheme |
- 1447-10-5
(2,3,5,6-tetramethyl-1,4-phenylene)bis(methylene) diacetate
- 14458-05-0
2,3,5,6-tetramethyl-1,4-benzenedicarboxylic acid
| Conditions | Yield |
|---|---|
| Multi-step reaction with 2 steps 1: ethanol; potassium hydroxide / 90 °C 2: chromium(VI) oxide; sulfuric acid; hydrogenchloride / water View Scheme |
- 280-57-9
1,4-diaza-bicyclo[2.2.2]octane
- 100-21-0
terephthalic acid
- 14458-05-0
2,3,5,6-tetramethyl-1,4-benzenedicarboxylic acid
| Conditions | Yield |
|---|---|
| In N,N-dimethyl-formamide at 120℃; for 48h; | 86% |
- 14458-05-0
2,3,5,6-tetramethyl-1,4-benzenedicarboxylic acid
| Conditions | Yield |
|---|---|
| Stage #1: 2,3,5,6-tetramethyl-1,4-benzenedicarboxylic acid; K(2 - x)(NMe4)x[I2Mo10O10S10(OH)10(H2O)5]·20H2O With potassium hydroxide In water at 50℃; for 0.5h; pH=4.5; Stage #2: cesium chloride In water at 20℃; | 83% |
