1823-59-2
- Product Name：4,4'-Oxydiphthalic anhydride
- Molecular Formula：C16H6O7
- Purity：99%
- Molecular Weight：310.219
Product Details
pd_meltingpoint:225-229 °C(lit.)
Appearance:off-white to white powder
Purity:99%
Chinese Manufacturer Supply 4,4'-Oxydiphthalic anhydride 1823-59-2 On Stock with Competitive Price
- Molecular Formula:C16H6O7
- Molecular Weight:310.219
- Appearance/Colour:off-white to white powder
- Vapor Pressure:2.41E-13mmHg at 25°C
- Melting Point:225-229 °C(lit.)
- Refractive Index:1.694
- Boiling Point:577.7 °C at 760 mmHg
- Flash Point:260.7 °C
- PSA：95.97000
- Density:1.665 g/cm3
- LogP:2.10010
Bis-(3-phthalyl anhydride) ether(Cas 1823-59-2) Usage
|
Preparation |
The preparation of 4,4'-Oxydiphthalic anhydride is as follows:Chlorophthalic anhydride (30g, 160mmol), tetraphenyl phosphonium bromide (0.3g, 0.7mmol), and 2,5-dichlorobenzoic acid (0.08g, 0.4mmol) were heated to approximately 220℃. Potassium carbonate (7.95g, 58mmol) was added over 45 minutes. The reaction was sampled after addition of the potassium carbonate and showed a 24.9% conversion to 4,4'-oxydiphthalic anhydride. The reaction was heated for an additional 45 minutes. The reaction mixture was diluted with 1,2,4-trichlorobenzene (90g) and filtered. The 4,4'-oxydiphthalic anhydride was allowed to crystallize and was collected, washed with 1,2,4-trichlorobenzene followed by hexane, and dried in an air circulating oven at 120℃. to give crude 4,4'-oxydiphthalic anhydride, 12.9g. |
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Flammability and Explosibility |
Notclassified |
InChI:InChI=1/C16H6O7/c17-13-9-3-1-7(5-11(9)15(19)22-13)21-8-2-4-10-12(6-8)16(20)23-14(10)18/h1-6H
1823-59-2 Relevant articles
Preparation method of 4, 4'-diphenyl ether tetracarboxylic dianhydride
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Paragraph 0027-0035, (2021/05/29)
The invention provides a preparation met...
Preparation method of 3, 3 ', 4, 4'-diphenyl ether tetracarboxylic acid dianhydride
-
Paragraph 0037-0049, (2020/07/12)
The invention discloses a preparation me...
Preparation method of 4,4'-oxydiphthalic anhydride
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Paragraph 0048-0054, (2020/06/09)
The invention relates to the technical f...
Preparation method of 3,3 ’, 4,4 ’ - diphenyl ether tetracarboxylic dianhydride (by machine translation)
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Paragraph 0027; 0030; 0031; 0033; 0034; 0036; 0037; 0039, (2019/12/25)
The refined product is subjected to, hea...
1823-59-2 Process route
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118-45-6
4-chlorophthalic anhydride
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1823-59-2
4,4'-oxydiphthalic dianhydride
| Conditions | Yield |
|---|---|
|
With
potassium carbonate;
hexaethylguanidinium chloride;
In
water; 1,2-dichloro-benzene;
for 3.5h;
Heating / reflux;
|
85% |
|
With
potassium carbonate; sodium nitrite;
In
N,N-dimethyl acetamide; toluene;
at 162 - 170 ℃;
for 5h;
|
85% |
|
4-chlorophthalic anhydride;
With
monopotassium carbonate;
tetraphenylphosphonium bromide; potassium hydrogencarbonate;
In
2,4-dichlorotoluene;
for 7.5h;
Heating / reflux;
Nitrogen atmosphere;
Conversion of starting material;
Heating / reflux;
|
82% |
|
With
monopotassium carbonate;
tetraphenylphosphonium bromide; potassium hydrogencarbonate;
In
1,2-dichloro-benzene;
Conversion of starting material;
Heating / reflux;
|
80% |
|
With
tetraphenylphosphonium bromide; potassium carbonate; caesium carbonate; 1,2,4-Trichlorobenzene;
Reagent/catalyst;
Inert atmosphere;
|
72% |
|
With
N-[bis(diethylamino)methylene]-N-ethylethane ammonium chloride; potassium carbonate;
In
1,2-dichloro-benzene;
for 8h;
|
|
|
With
potassium carbonate;
N-[bis(diethylamino)methylene]-N-ethylethane ammonium chloride;
In
dichlorobenzene, 1,2-;
at 210 ℃;
Product distribution / selectivity;
Molecular sieve;
Inert atmosphere;
|
|
|
With
potassium carbonate;
N-[bis(diethylamino)methylene]-N-ethylethane ammonium chloride;
In
dichlorobenzene, 1,2-;
at 210 ℃;
Product distribution / selectivity;
Molecular sieve;
Inert atmosphere;
|
|
|
With
potassium carbonate;
N-[bis(diethylamino)methylene]-N-ethylethane ammonium chloride;
In
1,2-dichloro-benzene;
at 210 ℃;
for 4h;
Inert atmosphere;
|
-
-
7717-76-2
4,4'-oxydiphthalic acid
-
-
1823-59-2
4,4'-oxydiphthalic dianhydride
| Conditions | Yield |
|---|---|
|
With
2,6-bis[(2,2,6,6-tetramethylpiperidin-1-yl)methyl]phenylboronic acid;
In
propyl cyanide;
for 12h;
Reflux;
|
90% |
|
In
water;
at 120 ℃;
Purification / work up;
|
|
|
In
1,2-dichloro-benzene;
at 200 ℃;
Product distribution / selectivity;
Heating / reflux;
|
|
|
at 120 - 220 ℃;
for 24h;
|
|
|
at 210 - 230 ℃;
|
1823-59-2 Upstream products
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118-45-6
4-chlorophthalic anhydride
-
7717-76-2
4,4'-oxydiphthalic acid
-
2751-90-8
tetraphenylphosphonium bromide
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50-30-6
2,6-dichlorobenzoic acid
1823-59-2 Downstream products
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89-20-3
4-chlorophthalic acid
-
7717-76-2
4,4'-oxydiphthalic acid
-
147-14-8
copper phthalocyanine
-
1132795-64-2
C64H30Cu2N16O
Relevant Products
-
Tris(2-(2-methoxyethoxy)ethyl)amineCAS：70384-51-9
-
Cyclopentyl bromideCAS：137-43-9
-
1-Iodo-4-methylbenzeneCAS：624-31-7
