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56671-28-4

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56671-28-4 Structure

56671-28-4 Structure
IdentificationBack Directory
[Name]

4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID
[CAS]

56671-28-4
[Synonyms]

BUTTPARK 29\08-32
AKOS BBS-00000134
IFLAB-BB F1901-0074
4 5 6 7-TETRAHYDRO-4-OXOBENZOFURAN-3- &
4,5,6,7-tetrahydro-4-oxo-3-benzofurancarboxylicacid
4-OXO-4,5,6,7-TETRAHYDROCOUMARONE-3-CARBOXYLIC ACID
4-oxo-6,7-dihydro-5H-1-benzofuran-3-carboxylic acid
4-OXO-4,5,6,7-TETRAHYDROBENZOFURAN-3-CARBOXYLIC ACID
4,5,6,7-Tetrahydro-4-oxobenzofuran-3-carboxylic acid
3-Benzofurancarboxylicacid, 4,5,6,7-tetrahydro-4-oxo-
4-OXO-4,5,6,7-TETRAHYDRO-1-BENZOFURAN-3-CARBOXYLIC ACID
4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID
4-Oxo-4,5,6,7-tetrahydro-1-benzofuran-3-carboxylic acid, 3-Carboxy-4-oxo-4,5,6,7-tetrahydrobenzo[b]furan
[Molecular Formula]

C9H8O4
[MDL Number]

MFCD00052170
[MOL File]

56671-28-4.mol
[Molecular Weight]

180.16
Chemical PropertiesBack Directory
[Melting point ]

140 °C
[Boiling point ]

383.5±42.0 °C(Predicted)
[density ]

1.406±0.06 g/cm3(Predicted)
[storage temp. ]

2-8°C
[pka]

3.74±0.20(Predicted)
[CAS DataBase Reference]

56671-28-4
Safety DataBack Directory
[Hazard Codes ]

C
[Risk Statements ]

36/37/38
[Safety Statements ]

26-36/37/39
[Hazard Note ]

Corrosive
[HazardClass ]

IRRITANT
[HS Code ]

2932990090
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Resorcinol-->Ethyl bromopyruvate
[Preparation Products]

4-Hydroxybenzofuran-3-carboxylic acid
Hazard InformationBack Directory
[Chemical Properties]

White needle crystals. Melting point 141℃.
[Uses]

4-Oxo-4,5,6,7-tetrahydrobenzo[b]furan-3-carboxylic acid can be used as an intermediate of Propala.
[Definition]

ChEBI: 4-oxo-4,5,6,7-tetrahydrobenzo[b]furan-3-carboxylic acid is a member of benzofurans.
[Synthesis]

The methanol solution of resorcinol and potassium hydroxide is used to react with hydrogen under the action of active nickel to generate potassium 3-ketocyclohex-1-enolate, which is then cyclized with ethyl bromopyruvate under alkaline conditions , and then acidified to obtain ?4-oxo-4,5,6,7-tetrahydrobenzo[b]furan-3-carboxylic acid.
Spectrum DetailBack Directory
[Spectrum Detail]

4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID(56671-28-4)1HNMR
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