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| CAS No.: | 5763-49-5 |
|---|---|
| Name: | tetrahydro-1H-cyclopenta[c]furan-1,3(3aH)-dione |
| Molecular Structure: | |
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| Formula: | C7H8O3 |
| Molecular Weight: | 140.139 |
| Synonyms: | 1,2-Cyclopentanedicarboxylicanhydride (6CI,7CI,8CI);1H-Cyclopenta[c]furan-1,3(3aH)-dione, tetrahydro-;Tetrahydro-1H-cyclopenta[c]furan-1,3(3aH)-dione;Tetrahydrocyclopenta[c]furan-1,3-dione; |
| EINECS: | 227-286-1 |
| Density: | 1.309 g/cm3 |
| Boiling Point: | 289.2 °C at 760 mmHg |
| Flash Point: | 140.4 °C |
| PSA: | 43.37000 |
| LogP: | 0.48610 |
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cis-1,2-cyclopentanedicarboxylic acid
- 5763-49-5
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
| Conditions | Yield |
|---|---|
| at 150 - 160℃; anhydride of/the/ cis-cyclopentane-dicarboxylic acid-(1.2); | |
| Multi-step reaction with 2 steps 1: concentrated hydrochloric acid / 180 °C 2: acetyl chloride / 140 °C / im Einschlussrohr View Scheme | |
| With acetic anhydride for 20h; Heating / reflux; |
- 80656-14-0
trans-1,2-cyclopentanedicarboxylic acid
- 5763-49-5
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
| Conditions | Yield |
|---|---|
| at 300℃; anhydride of/the/ cis-cyclopentane-dicarboxylic acid-(1.2); | |
| With acetic anhydride anhydride of/the/ cis-cyclopentane-dicarboxylic acid-(1.2); | |
| With acetyl chloride at 140℃; im Einschlussrohr; anhydride of/the/ cis-cyclopentane-dicarboxylic acid-(1.2); | |
| With acetic anhydride anschliessend Erhitzen auf 170grad bei 20 mmHg Druck; anhydride of/the/ trans-cyclopentane-dicarboxylic acid-(1.2); | |
| Multi-step reaction with 2 steps 1: acetic acid anhydride / Loesen in Wasser oder in Kalilauge und Ansaeuern 2: 150 - 160 °C View Scheme |
- 50708-47-9
1,1,2,2-Cyclopentantetracarbonsaeure-tetraethylester
- 5763-49-5
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
| Conditions | Yield |
|---|---|
| Multi-step reaction with 3 steps 1: glacial acetic acid; concentrated sulfuric acid; water 2: acetic acid anhydride / Loesen in Wasser oder in Kalilauge und Ansaeuern 3: 150 - 160 °C View Scheme | |
| Multi-step reaction with 2 steps 1: glacial acetic acid; concentrated sulfuric acid; water 2: acetic acid anhydride View Scheme |
- 21917-20-4
(trans)-1,2-cyclopentanedicarboxylic acid
- 5763-49-5
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
| Conditions | Yield |
|---|---|
| In benzene | 8.60 g (81%) |
| Conditions | Yield |
|---|---|
| at 50 - 55℃; for 5h; | 98% |
| at 50 - 55℃; for 16h; |
| Conditions | Yield |
|---|---|
| Stage #1: carbon tetrabromide With triphenylphosphine In tetrahydrofuran at 0℃; Inert atmosphere; Stage #2: With triethylamine In tetrahydrofuran for 0.0833333h; Inert atmosphere; Stage #3: 2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione In tetrahydrofuran at 0 - 20℃; Inert atmosphere; | 24% |
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(R)-Phenylglycinol
- 5763-49-5
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
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2-((R)-2-Hydroxy-1-phenyl-ethylcarbamoyl)-cyclopentanecarboxylic acid
| Conditions | Yield |
|---|---|
| In tetrahydrofuran 1.) 0 deg C, 15 min; 2.) r.t., 1 h; |
- 74-89-5
methylamine
- 5763-49-5
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
- 71099-01-9
N-Methylcyclopentane-1,2-dicarboximide
- 5763-49-5
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
- 1461-96-7
cis-1,2-cyclopentanedicarboxylic acid
| Conditions | Yield |
|---|---|
| durch Ansaeuern; anhydride of/the/ cis-cyclopentane-dicarboxylic acid-(1.2); |
- 5763-49-5
2,4,5,6,3a,6a-hexahydro-2-oxapentalen-1,3-dione
- 80656-14-0
trans-1,2-cyclopentanedicarboxylic acid
| Conditions | Yield |
|---|---|
| anhydride of/the/ trans-cyclopentane-dicarboxylic acid-(1.2); |
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Specification
The 1,2-Cyclopentanedicarboxylic anhydride , with the CAS registry number 5763-49-5, is also known as 1H-Cyclopenta[c]furan-1,3(3aH)-dione, tetrahydro-. Its EINECS number is 227-286-1. This chemical's molecular formula is C7H8O3 and molecular weight is 140.14. What's more, its systematic name is tetrahydro-1H-cyclopenta[c]furan-1,3(3aH)-dione.
Physical properties of 1,2-Cyclopentanedicarboxylic anhydride are: (1)ACD/LogP: -0.32; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -0.32; (4)ACD/LogD (pH 7.4): -0.32; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 15.9; (8)ACD/KOC (pH 7.4): 15.9; (9)#H bond acceptors: 3; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 43.37 Å2; (13)Index of Refraction: 1.513; (14)Molar Refractivity: 32.2 cm3; (15)Molar Volume: 106.9 cm3; (16)Polarizability: 12.76×10-24cm3; (17)Surface Tension: 45.5 dyne/cm; (18)Density: 1.309 g/cm3; (19)Flash Point: 140.4 °C; (20)Enthalpy of Vaporization: 52.85 kJ/mol; (21)Boiling Point: 289.2 °C at 760 mmHg; (22)Vapour Pressure: 0.00223 mmHg at 25°C.
You can still convert the following datas into molecular structure:
(1)SMILES: O=C1OC(=O)C2CCCC12
(2)Std. InChI: InChI=1S/C7H8O3/c8-6-4-2-1-3-5(4)7(9)10-6/h4-5H,1-3H2
(3)Std. InChIKey: NMSRALOLNIBERV-UHFFFAOYSA-N