7-Methoxy-4,5-dihydronaphtho[1,2-b]thiophene-2-carboxylic acid

Base Information

• Chemical Name: 7-Methoxy-4,5-dihydronaphtho[1,2-b]thiophene-2-carboxylic acid
• CAS No.: 78554-65-1
• Molecular Formula: C₁₄H₁₂O₃S
• Molecular Weight: 260.313
• Hs Code.: 2934999090
• DSSTox Substance ID: DTXSID40395104
• Wikidata: Q82194933
• ChEMBL ID: CHEMBL1567079
• Mol file: 78554-65-1.mol

Synonyms:7-methoxy-4,5-dihydronaphtho[1,2-b]thiophene-2-carboxylic acid;78554-65-1;7-methoxy-4,5-dihydrobenzo[g][1]benzothiole-2-carboxylic acid;Naphtho[1,2-b]thiophene-2-carboxylicacid, 4,5-dihydro-7-methoxy-;MLS000773834;CHEMBL1567079;SCHEMBL11902151;DTXSID40395104;QMMBYYCLUIZAIF-UHFFFAOYSA-N;7-methoxy-4H,5H-naphtho[1,2-b]thiophene-2-carboxylic acid;HMS2747D04;STK504077;AKOS000265725;SMR000364669;FT-0679251;EN300-09793;AB00664009-02;Z56347070;7-METHOXY-4,5-DIHYDRONAPHTHO[1,2-B]THIOPHENE-2-CARBOXYLICACID

Chemical Property of 7-Methoxy-4,5-dihydronaphtho[1,2-b]thiophene-2-carboxylic acid

Chemical Property:

• Vapor Pressure: 2.28E-10mmHg at 25°C
• Melting Point: 124 °C
• Refractive Index: 1.653
• Boiling Point: 488.8°C at 760 mmHg
• PKA: 3.85±0.20(Predicted)
• Flash Point: 249.4°C
• PSA: 74.77000
• Density: 1.355g/cm³
• LogP: 3.22050
• XLogP3: 3.4
• Hydrogen Bond Donor Count: 1
• Hydrogen Bond Acceptor Count: 4
• Rotatable Bond Count: 2
• Exact Mass: 260.05071541
• Heavy Atom Count: 18
• Complexity: 333

Purity/Quality:

98%min ^*data from raw suppliers

7-Methoxy-4,5-dihydronaphtho[1,2-b]thiophene-2-carboxylic acid ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: COC1=CC2=C(C=C1)C3=C(CC2)C=C(S3)C(=O)O

Technology Process of 7-Methoxy-4,5-dihydronaphtho[1,2-b]thiophene-2-carboxylic acid

There total 4 articles about 7-Methoxy-4,5-dihydronaphtho[1,2-b]thiophene-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: 69.0%

ethyl 7-methoxy-4,5-dihydronaphtho[1,2-b]thiophene-2-carboxylate (837373-23-6) → 7-methoxy-4,5-dihydronaphtho<1,2-b>thiophene-2-carboxylic acid (78554-65-1)

Guidance literature:

ethyl 7-methoxy-4,5-dihydronaphtho[1,2-b]thiophene-2-carboxylate; With methanol; sodium hydroxide; In tetrahydrofuran; at 50 ℃; for 2h;

With hydrogenchloride; In tetrahydrofuran; methanol; water; pH=5;

Reference yield:

6-methoxy-3,4-dihydro-1(2H)-naphthalenone (1078-19-9) → 7-methoxy-4,5-dihydronaphtho<1,2-b>thiophene-2-carboxylic acid (78554-65-1)

Guidance literature:

Multi-step reaction with 3 steps

1.1: trichlorophosphate / 0.5 h / 0 °C / Inert atmosphere

1.2: 2 h / 0 - 80 °C

2.1: ethanol; sodium / 1 h / 0 - 80 °C

3.1: sodium hydroxide; methanol / tetrahydrofuran / 2 h / 50 °C

3.2: pH 5

With methanol; ethanol; sodium; sodium hydroxide; trichlorophosphate; In tetrahydrofuran;

Reference yield:

1-chloro-6-methoxy-3,4-dihydro-2-naphthalenecarbaldehyde (72019-91-1) → 7-methoxy-4,5-dihydronaphtho<1,2-b>thiophene-2-carboxylic acid (78554-65-1)

Guidance literature:

Multi-step reaction with 2 steps

1.1: ethanol; sodium / 1 h / 0 - 80 °C

2.1: sodium hydroxide; methanol / tetrahydrofuran / 2 h / 50 °C

2.2: pH 5

With methanol; ethanol; sodium; sodium hydroxide; In tetrahydrofuran;

upstream raw materials:

1-chloro-6-methoxy-3,4-dihydro-2-naphthalenecarbaldehyde

mercaptoacetic acid

6-methoxy-3,4-dihydro-1(2H)-naphthalenone

ethyl 7-methoxy-4,5-dihydronaphtho[1,2-b]thiophene-2-carboxylate

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