| Identification | More | [Name]
2,3-Dihydro-1,4-benzodioxine-5-carboxylic acid | [CAS]
4442-53-9 | [Synonyms]
1,4-BENZODIOXAN-5-CARBOXYLIC ACID
1,4-BENZODIOXANE-5-CARBOXYLIC ACID
2,3-DIHYDRO-1,4-BENZODIOXINE-5-CARBOXYLIC ACID
2,3-DIHYDRO-BENZO[1,4]DIOXINE-5-CARBOXYLIC ACID
5-CARBOXY-1,4-BENZODIOXANE
7,10-dioxabicyclo[4.4.0]deca-1,3,5-triene-2-carboxylic acid
AKOS BBS-00002750
2,3-dihydro-1,4-benzodioxin-5-carboxylic acid
1,4-Benzodioxine-5-carboxylicacid
2,3-DIHYDRO-1,4-BENZODIOXAN-5-CARBOXYLIC ACID,99% | [EINECS(EC#)]
224-670-0 | [Molecular Formula]
C9H8O4 | [MDL Number]
MFCD00239415 | [Molecular Weight]
180.16 | [MOL File]
4442-53-9.mol |
| Chemical Properties | Back Directory | [Appearance]
white to light yellow crystal powder | [Melting point ]
90-94 °C(lit.) | [Boiling point ]
334.1±41.0 °C(Predicted) | [density ]
1.376±0.06 g/cm3(Predicted) | [storage temp. ]
Sealed in dry,Room Temperature | [form ]
powder to crystal | [pka]
4.09±0.20(Predicted) | [color ]
Light yellow to Brown | [InChIKey]
VCLSWKVAHAJSFL-UHFFFAOYSA-N | [CAS DataBase Reference]
4442-53-9(CAS DataBase Reference) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S37/39:Wear suitable gloves and eye/face protection . | [WGK Germany ]
3
| [Hazard Note ]
Irritant | [HS Code ]
29329900 |
| Hazard Information | Back Directory | [Chemical Properties]
white to light yellow crystal powder | [Synthesis]
The general procedure for the synthesis of 2,3-dihydro-1,4-benzodioxane-5-carboxylic acid from 2,3-dihydrobenzo[b][1,4]dioxane-5-carboxaldehyde was as follows: 2,3-dihydrobenzo[b][1,4]dioxane-5-carboxaldehyde (0.500 g, 3.04 mmol) was dissolved in acetone (10 mL) and mixed with an aqueous solution of sulfamic acid at 0-5 °C ( 0.455 g, 4.5 mmol) was mixed and stirred. After the reaction mixture was stirred for 20 minutes, aqueous sodium chlorite (0.421 g, 4.5 mmol) was added and the reaction was continued for 18 hours at room temperature. After completion of the reaction, the reaction mixture was concentrated under reduced pressure and quenched with water. The resulting solid was collected by filtration and dried under vacuum to afford the target product 2,3-dihydro-1,4-benzodioxane-5-carboxylic acid (0.332 g). The product was characterized as follows: 1H NMR (DMSO-d6): δ 4.27 (s, 4H), 6.84 (t, J = 7.2 Hz, 1H), 7.02 (d, J = 7.8 Hz, 1H), 7.20 (d, J = 7.5 Hz, 1H), 12.5 (bs, 1H); MS [M + H]+: 181.12. | [References]
[1] Patent: WO2013/153535, 2013, A1. Location in patent: Page/Page column 63 |
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