4-Oxo-4H-(1)benzothieno(3,2-b)pyran-2-carboxylic acid

Base Information

Chemical Name:4-Oxo-4H-(1)benzothieno(3,2-b)pyran-2-carboxylic acid
CAS No.:40040-62-8
Molecular Formula:
Molecular Weight:246.2386
Hs Code.:
DSSTox Substance ID:DTXSID60193104
Wikidata:Q83065826

Synonyms:4-oxo-4H-(1)benzothieno(3,2-b)pyran-2-carboxylic acid

Suppliers and Price of 4-Oxo-4H-(1)benzothieno(3,2-b)pyran-2-carboxylic acid

Supply Marketing:

Business phase:: The product has achieved commercial mass production^*data from LookChem market partment

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Chemical Property of 4-Oxo-4H-(1)benzothieno(3,2-b)pyran-2-carboxylic acid

Chemical Property:

Vapor Pressure:9.63E-09mmHg at 25°C
Boiling Point:446.1°C at 760 mmHg
Flash Point:223.6°C
Density:1.631g/cm³
XLogP3:2.6
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:5
Rotatable Bond Count:1
Exact Mass:245.99867984
Heavy Atom Count:17
Complexity:403

Purity/Quality:

Safty Information:

Pictogram(s):
Hazard Codes:

MSDS Files:: SDS file from LookChem

Useful:

Canonical SMILES:C1=CC=C2C(=C1)C3=C(S2)C(=O)C=C(O3)C(=O)O

Technology Process of 4-Oxo-4H-(1)benzothieno(3,2-b)pyran-2-carboxylic acid

There total 7 articles about 4-Oxo-4H-(1)benzothieno(3,2-b)pyran-2-carboxylic acid which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

: 3260-92-2
2-acetyl-3-hydroxybenzo[b]thiophene

: 40040-62-8
4-Oxo-4H-<1>benzothieno<3,2-b>pyron-2-carbonsaeure

Guidance literature:: Multi-step reaction with 3 steps

1: 46 percent / NaH, MeOH / benzene / 4 h / Heating

2: HCl / methanol / 1 h / Heating

3: 20 percent H₂SO₄ / acetic acid / Heating

With hydrogenchloride; methanol; sulfuric acid; sodium hydride; In methanol; acetic acid; benzene;
DOI:10.1002/ardp.19803130502

Reference yield:

: 344405-35-2
(Z)-2-Hydroxy-4-(3-hydroxy-benzo[b]thiophen-2-yl)-4-oxo-but-2-enoic acid methyl ester

: 40040-62-8
4-Oxo-4H-<1>benzothieno<3,2-b>pyron-2-carbonsaeure

Guidance literature:: Multi-step reaction with 2 steps

1: HCl / methanol / 1 h / Heating

2: 20 percent H₂SO₄ / acetic acid / Heating

With hydrogenchloride; sulfuric acid; In methanol; acetic acid;
DOI:10.1002/ardp.19803130502

Reference yield:

: 344406-16-2
(Z)-2-Hydroxy-4-(3-hydroxy-benzo[b]thiophen-2-yl)-4-oxo-but-2-enoic acid ethyl ester

: 40040-62-8
4-Oxo-4H-<1>benzothieno<3,2-b>pyron-2-carbonsaeure

Guidance literature:: Multi-step reaction with 2 steps

1: HCl / ethanol / 1 h / Heating

2: 20 percent H₂SO₄ / acetic acid / Heating

With hydrogenchloride; sulfuric acid; In ethanol; acetic acid;
DOI:10.1002/ardp.19803130502