Basic information Safety Supplier Related

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

Basic information Safety Supplier Related

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

Product Name:
4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID
Synonyms:
  • 4,5,6,7-tetrahydro-4-oxo-3-benzofurancarboxylicacid
  • 4,5,6,7-Tetrahydro-4-oxobenzofuran-3-caroxylic acid
  • 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-TETRAHYDROBENZOFURAN-3-CARBOXYLIC ACID
  • 4-OXO-4,5,6,7-TETRAHYDROCOUMARONE-3-CARBOXYLIC ACID
  • AKOS BBS-00000134
  • IFLAB-BB F1901-0074
CAS:
56671-28-4
MF:
C9H8O4
MW:
180.16
Mol File:
56671-28-4.mol
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4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID Chemical Properties

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
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Safety Information

Hazard Codes 
C
Risk Statements 
36/37/38
Safety Statements 
26-36/37/39
Hazard Note 
Corrosive
HazardClass 
IRRITANT
HS Code 
2932990090
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4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID Usage And Synthesis

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.

4-OXO-4,5,6,7-TETRAHYDROBENZO[B]FURAN-3-CARBOXYLIC ACID Preparation Products And Raw materials

Raw materials

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

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