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| CAS No.: | 4415-87-6 |
|---|---|
| Name: | Cyclobutane-1,2,3,4-tetracarboxylic dianhydride |
| Article Data: | 11 |
| Molecular Structure: | |
|
|
|
| Formula: | C8H4O6 |
| Molecular Weight: | 196.116 |
| Synonyms: | 1,2,3,4-Cyclobutanetetracarboxylic1,2:3,4-dianhydride (7CI,8CI);1,2,3,4-Cyclobutanetetracarboxylic dianhydride(6CI);Cyclobuta[1,2-c:3,4-c']difurantetrone, tetrahydro- (9CI);Cyclobutane-1,2,3,4-tetracarboxylic acid dianhydride;Cyclobutanetetracarboxylic acid dianhydride;Cyclobutanetetracarboxylicdianhydride;Maleic anhydride cyclic dimer; |
| EINECS: | 224-577-5 |
| Density: | 1.823 g/cm3 |
| Melting Point: | >300 °C(lit.) |
| Boiling Point: | 545.3 °C at 760 mmHg |
| Flash Point: | 253.7 °C |
| Hazard Symbols: |
 Xi
|
| Risk Codes: | 36/37/38 |
| Safety: | 26-36 |
| Transport Information: | UN 1759 |
| PSA: | 86.74000 |
| LogP: | -1.36840 |
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1,2,3,4-cyclobutane tetracarboxylic acid
- 4415-87-6
cyclobutanetetracarboxylic dianhydride
| Conditions | Yield |
|---|---|
| With acetic anhydride at 150℃; for 24h; |
| Conditions | Yield |
|---|---|
| Stage #1: maleic anhydride In ethyl acetate for 240h; UV-irradiation; Stage #2: With acetic anhydride at 150℃; for 24h; | |
| In ethyl acetate for 2h; Inert atmosphere; Slug flow microreactor; Ultrasonication; Irradiation; | 2.15 g |
- 108-31-6
maleic anhydride
- 74-85-1
ethene
A
- 4415-87-6
cyclobutanetetracarboxylic dianhydride
B
- 4462-96-8
cis-1,2-cyclobutane dicarboxylic anhydride
| Conditions | Yield |
|---|---|
| With benzophenone In ethyl acetate at 25℃; under 760.051 Torr; UV-irradiation; Flow reactor; |
| Conditions | Yield |
|---|---|
| In acetonitrile at 50℃; for 24h; Solvent; Temperature; | 87% |
| Conditions | Yield |
|---|---|
| Stage #1: cyclobutanetetracarboxylic dianhydride; 2,5-Dimethyl-1,4-phenylenediamine In 1-methyl-pyrrolidin-2-one at 20℃; for 12h; Inert atmosphere; Stage #2: In 1-methyl-pyrrolidin-2-one; toluene at 180℃; for 9h; Inert atmosphere; | 80.8% |
| Conditions | Yield |
|---|---|
| With propionic acid at 100 - 120℃; for 24h; Inert atmosphere; | 77% |
- 4415-87-6
cyclobutanetetracarboxylic dianhydride
- 18107-18-1
diazomethyl-trimethyl-silane
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(1α,2β,3β,4α)-1,3-Di[N-(2-hydroxyethyl)-N-(4-phenoxybenzyl)aminocarbonyl]cyclobutane-2,4-dicarboxylic acid
| Conditions | Yield |
|---|---|
| With hydrogenchloride; dmap; LiOH; triethylamine In acetic acid 1-hydroxy-propyl ester; methanol; water; acetonitrile | 40% |
- 4415-87-6
cyclobutanetetracarboxylic dianhydride
- 169943-97-9
N-Benzyl-N-(4-phenoxybenzyl)amine
- 171348-76-8
(1α,2β,3β,4α)-1,3-Di(N-benzyl-N-(4-phenoxybenzyl)aminocarbonyl)cyclobutane-2,4-dicarboxylic acid
| Conditions | Yield |
|---|---|
| In tetrahydrofuran; ethyl acetate | 32% |
- 4415-87-6
cyclobutanetetracarboxylic dianhydride
- 169943-70-8
N-Propyl-N-(4-phenoxymethylbenzyl)amine hydrochloride
- 121-44-8
triethylamine
- 171349-23-8
(1α,2β,3β,4α)-1,3-Di[N-propyl-N-(4-phenoxymethylbenzyl)aminocarbonyl]-2,4-cyclobutanedicarboxylic acid
| Conditions | Yield |
|---|---|
| In acetonitrile | 28% |
- 4415-87-6
cyclobutanetetracarboxylic dianhydride
- 169943-70-8
N-Propyl-N-(4-phenoxymethylbenzyl)amine hydrochloride
- 121-44-8
triethylamine
| Conditions | Yield |
|---|---|
| In acetonitrile | A 28% B n/a |
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Chemistry
Empirical Formula: C8H4O6
Molecular Weight: 196.1138
EINECS: 224-577-5
Structure of Cyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetrone,tetrahydro- (CAS NO.4415-87-6):
Index of Refraction: 1.598
Molar Refractivity: 36.73 cm3
Molar Volume: 107.5 cm3
Polarizability: 14.56×10-24cm3
Surface Tension: 73.7 dyne/cm
Density: 1.823 g/cm3
Flash Point: 253.7 °C
Enthalpy of Vaporization: 82.41 kJ/mol
Melting Point: >300 °C(lit.)
Boiling Point: 545.3 °C at 760 mmHg
Vapour Pressure: 6.02E-12 mmHg at 25°C
Product Categories: Fluorenes, etc. (reagent for high-performance polymer research);Functional Materials;Reagent for High-Performance Polymer Research;Carbonyl Compounds;Carboxylic Acid Anhydrides;Organic Building Blocks
Safety Profile
Hazard Codes: 
Xi
Risk Statements: 36/37/38
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36:Wear suitable protective clothing.
RIDADR: 1759
WGK Germany: 3
F: 9-21
HazardClass: 8
PackingGroup: III
Specification
Cyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetrone,tetrahydro- , its cas register number is 4415-87-6. It also can be called Tetrahydrocyclobuta(1,2-c:3,4-c')difuran-1,3,4,6-tetraone ; Tetrahydrofuro[3',4':3,4]cyclobuta[1,2-c]furan-1,3,4,6-tetron ; Cyclobutane-1,2,3,4-tetracarboxylic dianhydride .